1 If astronauts want to stay on the Moon for more than a few days,they must find local resources,and water is one of the most crucial ones.Scientists believe there's water on the Moon,but they're unsure of whe...1 If astronauts want to stay on the Moon for more than a few days,they must find local resources,and water is one of the most crucial ones.Scientists believe there's water on the Moon,but they're unsure of where it lies.2 Two probes are on their way to the Moon to solve this mystery.They will be launched on the same SpaceX Falcon 9 rocket from Cape Canaveral.If everything goes as planned,the first probe to reach the Moon will be Athena.Timothy Crain,the chief technology officer of Intuitive Machines,says it will take about 3 to 4 days,depending on the launch time.They'll orbit the Moon for 2 to 3 days to wait for the Sun to reach the landing site,because the lander's solar panels need sunlight to generate power.It only takes about 15 minutes to land softly after the engine is started.展开更多
The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of a...The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of asteroids that co-orbit closely with,but are outside the gravitational control of,the planet.So far,only five Earth quasi-satellites have been recognized,among which(469219)Kamo’oalewa(provisionally designated as 2016 HO3)is currently considered the most stable and the closest of these.However,little is known about this particular asteroid or this class of near-Earth asteroids because of the difficulties of observing them.China has announced that Tianwen-2,the asteroid sample-return mission to Kamo’oalewa,will be launched in 2025.Here,we review the current knowledge of Kamo’oalewa in terms of its physical characteristics,dynamic evolution,surface environment,and origin,and we propose possible breakthroughs that the samples could bring concerning the asteroid Kamo’oalewa as an Earth quasi-satellite.Confirming the origin of Kamo’oalewa,from its prevailing provenance as debris of the Moon,could be a promising start to inferring the evolutionary history of the Moon.This history would probably include a more comprehensive view of the lunar farside and the origin of the asymmetry between the two sides of the Moon.Comparing the samples from the Moon and Kamo’oalewa would also provide new insights into the Earth wind.展开更多
本研究运用语料库驱动的多维分析模式,对比探究The Moon and Sixpence傅惟慈译本和徐淳刚译本的风格异同。研究发现,两译本在“诗化/非诗化”“高可读性/低可读性”“弱源语透射/强源语透射”3个风格维度上存在显著差异,而在“规范化”...本研究运用语料库驱动的多维分析模式,对比探究The Moon and Sixpence傅惟慈译本和徐淳刚译本的风格异同。研究发现,两译本在“诗化/非诗化”“高可读性/低可读性”“弱源语透射/强源语透射”3个风格维度上存在显著差异,而在“规范化”维度上则呈现趋同性。各维度的区别性或趋同性特征具体表现为:维度1的人称代词与句段长等、维度2的结构助词“的”与介词等、维度3的量词与数词、维度4的“被”字句与致使性句式。两译本之“异”与译者身份和社会文化语境直接关联,两译本之“同”与操作规范密切相关。研究表明,多维分析模式可有效应用于汉译本风格对比研究。展开更多
我们可能在英语影视剧、文学作品中看到过一个短语叫“once in ablue moon”,这个短语用来描述很少发生的事件或情况,意味着某件事非常罕见,你可能很长时间都遇不到一次。例如,如果一个人偶尔玩一次游戏,你可以说他们“play games once ...我们可能在英语影视剧、文学作品中看到过一个短语叫“once in ablue moon”,这个短语用来描述很少发生的事件或情况,意味着某件事非常罕见,你可能很长时间都遇不到一次。例如,如果一个人偶尔玩一次游戏,你可以说他们“play games once in a blue moon”。展开更多
E·E卡明斯是美国20世纪现代主义诗人的杰出代表。他的诗歌创作在内容和形式上置传统于不顾,以其独特的创作技巧闻名于世。其新奇怪异的诗歌风格为许多研究者所关注。本文试图从in Just和MOOn Over TOwns MOOn两首诗入手,探析他诗...E·E卡明斯是美国20世纪现代主义诗人的杰出代表。他的诗歌创作在内容和形式上置传统于不顾,以其独特的创作技巧闻名于世。其新奇怪异的诗歌风格为许多研究者所关注。本文试图从in Just和MOOn Over TOwns MOOn两首诗入手,探析他诗歌中表现的生态意识,通过卡明斯对爱、春天与自由的歌颂来领略诗人的生态意识,深入领会诗歌的意义。展开更多
文摘1 If astronauts want to stay on the Moon for more than a few days,they must find local resources,and water is one of the most crucial ones.Scientists believe there's water on the Moon,but they're unsure of where it lies.2 Two probes are on their way to the Moon to solve this mystery.They will be launched on the same SpaceX Falcon 9 rocket from Cape Canaveral.If everything goes as planned,the first probe to reach the Moon will be Athena.Timothy Crain,the chief technology officer of Intuitive Machines,says it will take about 3 to 4 days,depending on the launch time.They'll orbit the Moon for 2 to 3 days to wait for the Sun to reach the landing site,because the lander's solar panels need sunlight to generate power.It only takes about 15 minutes to land softly after the engine is started.
基金supported by the National Natural Science Foundation of China(Grant Nos.42241106 and 42388101).
文摘The exploration of asteroids has received increasing attention since the 1990s because of the unique information these objects contain about the history of the early solar system.Quasi-satellites are a population of asteroids that co-orbit closely with,but are outside the gravitational control of,the planet.So far,only five Earth quasi-satellites have been recognized,among which(469219)Kamo’oalewa(provisionally designated as 2016 HO3)is currently considered the most stable and the closest of these.However,little is known about this particular asteroid or this class of near-Earth asteroids because of the difficulties of observing them.China has announced that Tianwen-2,the asteroid sample-return mission to Kamo’oalewa,will be launched in 2025.Here,we review the current knowledge of Kamo’oalewa in terms of its physical characteristics,dynamic evolution,surface environment,and origin,and we propose possible breakthroughs that the samples could bring concerning the asteroid Kamo’oalewa as an Earth quasi-satellite.Confirming the origin of Kamo’oalewa,from its prevailing provenance as debris of the Moon,could be a promising start to inferring the evolutionary history of the Moon.This history would probably include a more comprehensive view of the lunar farside and the origin of the asymmetry between the two sides of the Moon.Comparing the samples from the Moon and Kamo’oalewa would also provide new insights into the Earth wind.
文摘本研究运用语料库驱动的多维分析模式,对比探究The Moon and Sixpence傅惟慈译本和徐淳刚译本的风格异同。研究发现,两译本在“诗化/非诗化”“高可读性/低可读性”“弱源语透射/强源语透射”3个风格维度上存在显著差异,而在“规范化”维度上则呈现趋同性。各维度的区别性或趋同性特征具体表现为:维度1的人称代词与句段长等、维度2的结构助词“的”与介词等、维度3的量词与数词、维度4的“被”字句与致使性句式。两译本之“异”与译者身份和社会文化语境直接关联,两译本之“同”与操作规范密切相关。研究表明,多维分析模式可有效应用于汉译本风格对比研究。
文摘2025年,天文学研究在多个领域取得系统性进展,依托先进观测设备与深度数据分析,显著拓展了对宇宙多层次结构的认知。在银河系研究方面,郭守敬望远镜(Large Sky Area Multi-Object Fiber Spectroscopy Telescope,LAMOST)结合盖亚(Gaia)天文卫星的数据绘制出高精度银河系三维尘埃消光图,并揭示银河系英仙臂中存在直径超千秒差距的“超泡”结构。中国天眼(Five-hundred-meter Aperture Spherical radio Telescope,FAST)捕获了罕见的“脉冲星-氦星”双星系统,并首次揭示超高速中性氢云内部由湍流主导的复杂丝状网络。在太阳系探索中,嫦娥六号返回的月球背面样品分析,揭示了月幔的贫水特征、极端亏损的同位素组成以及南极-艾特肯盆地可能的撞击方向,为月球不对称演化提供了关键证据。宇宙学领域,暗能量光谱仪(Dark Energy Spectroscopic Instrument,DESI)巡天数据结合超新星观测数据,对暗能量状态方程是否随时间演化提出了约3σ显著性的观测指征。时域天文方面,“天关”卫星(Einstein Probe,EP)成功捕捉到高红移伽马暴的X射线前兆与新型弱喷流超新星暂现源。此外,盖亚天文卫星完成使命退役,留下宝贵遗产,欧几里得(Euclid)空间望远镜与薇拉·鲁宾天文台发布首批数据开启新时代,人类迎来第3位星际访客并完成立体观测,韦布空间望远镜(James Webb Space Telescope,JWST)直接成像年轻行星,以及事件视界望远镜(Event Horizon Telescope,EHT)揭示M87黑洞偏振结构的演化。这些成果再次印证了天文学领域地面与空间协同、多波段覆盖、时域监测与静态测绘并重这一综合探索范式的强大威力,并为理解从行星系统到宇宙尺度的形成与演化奠定了更加坚实的基础。
文摘E·E卡明斯是美国20世纪现代主义诗人的杰出代表。他的诗歌创作在内容和形式上置传统于不顾,以其独特的创作技巧闻名于世。其新奇怪异的诗歌风格为许多研究者所关注。本文试图从in Just和MOOn Over TOwns MOOn两首诗入手,探析他诗歌中表现的生态意识,通过卡明斯对爱、春天与自由的歌颂来领略诗人的生态意识,深入领会诗歌的意义。
