在西班牙南部马拉加的海滩上，一个女人正把一个东西扔进篝火里。

A woman throws an object into a bonfire on a beach in Malaga, southern Spain.

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更深远来看，世界上最罕见的鸭子——马达加斯加红头潜鸭，正卷土重来。

Further away, the world's rarest (罕见的) duck, the Madagascar pochard, is making a comeback.

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“我正慢慢让我的生活步入正轨，我想回家，而这儿正是我的家。”上周日，他在休斯顿西北的加利利浸信会教堂对教友们如是说。

"I'm taking my life back step by step, and I wanted to come home and this is my home," he told congregants Sunday at the Galilee Missionary Baptist Church in northwest Houston.

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So we can do this for any final charge we have, if we have a molecule that has a charge of plus 2, then all of the formal charges should add up to plus 2 and so on.

对于任意净电荷的情况,我们都可以这样做，比如假设我们有一个带两个正电荷的分子，那么所有的形式电荷加起来应该等于正二，等等。

麻省理工公开课 - 化学原理课程节选

Because of this my mother used to make Jell-o that had fruit suspended in it, and the fruit doesn't sink to the bottom like you'd expect it to sink through water, but it stays suspended inside.

正因为如此,当我母亲以前做,那种加水果的果冻的时候,水果并不会沉到果冻底部来,你以为它会像在水里那样,但水果是悬在果冻里的

耶鲁公开课 - 生物医学工程探索课程节选

that you were coming in to study what he calls "the master science " " the science of sciences " in some respects. It is that priority that Aristotle attributes to the regime that I think is what distinguishes his kind of political science from that of today.

你正开始学习的,是他所谓的主导科学“,“科学中的科学“,就某些层面而言,就因为亚里士多德将这种优先考虑,加到政体之中，因此让他的政治科学,有别于今日的政治科学。

耶鲁公开课 - 政治哲学导论课程节选