So, remember when you're looking at your periodic table, don't forget about the lanthanides, sometimes they come into play.

因此，要记住，当你在看元素周期表时，不要忘了镧系元素，有时候也会用到它们。

麻省理工公开课 - 化学原理课程节选

All your TA's have either already have their extra office hours, or there are some that will be going on tonight or tomorrow, so keep those in mind as your finishing up your studying for the exam.

你们的助教们有的已经做过额外的答疑，而有的会在今天晚上或者明天答疑，因此在你复习准备,考试的时候不要忘了这些。

麻省理工公开课 - 化学原理课程节选

And again, recall this is the theme raised at the beginning of Book II by Adeimantus, who puts forward an idea of self-control, or what he calls self-guardianship as his goal.

不要忘了这个主题是在,第，II册一开始时由，Adeimantus，所提出，他带进了自控的概念，或他称为作为个人目标的自我守护。

耶鲁公开课 - 政治哲学导论课程节选

So, don't forget to study this weekend and get those extra practice problems from the course website.

那么，这周末不要忘了复习,那些额外的习题可以在课程的网站上找到。

麻省理工公开课 - 化学原理课程节选