So, if we take a look at what a single bond is, and let me grab some molecules here.

如果来我们看一下单键，让我拿个分子。

麻省理工公开课 - 化学原理课程节选

And now we're asking you to look at krypton, so the atomic mass is 36. You can actually just grab that handout the second handout on the exam and look at the periodic table there. So, which of the following ions listed is isoelectronic with krypton?

现在我们请大家来看一下氪原子，它的原子量是，36，大家其实可以拿出这张讲义,第二份关于考试的讲义,看一下上面的周期表，那么，下列离子中，哪一个是与氪原子是等电子的？

麻省理工公开课 - 化学原理课程节选

If you decide to opt in by a pass fail, I just need to sign your white study card or if you wanna decide before the 5th Monday, just grab the pink slip and I can sign that and you can turn that in at any point and I'm happy to chat during break today or after class if you have any questions or concerns.

如果你上我们的课程只是要一个分数，那么我只需要在你的白卡片上签个名就可以了,或者说，如果在第五周的周一前还没考虑好，把你的解聘书拿来，只要我签个字,任何时候你都开以离开我的教室,当然，如果你有任何问题和疑虑,我也很高心和大家做课下交流。

哈佛公开课 - 计算机科学课程节选

There is this legend that he used to grab these huge chunks of meat and started gnawing on them like he would on a hotdog or something like that at a Yankee game, except that other people were already dressed up and the meat and the gravy was flying over them as he just sort of walked around gnawing on this stuff.

据说他习惯用手抓着一大块肉,就像我们在看棒球比赛时吃热狗那样,狼吞虎咽,尽管别人都衣冠整齐,等着肉和酱汁端上来,而他却边啃着那些肉边四处游走

耶鲁公开课 - 欧洲文明课程节选