今天我在化学课上用腐蚀性的晶体做实验。

Today, I was doing a lab in chemistry involving caustic crystals.

youdao

这里需要提醒那些在化学课上打瞌睡的人，滴定法是计算溶液中物质浓度的一种方法。

Titration, to remind those who dozed through their chemistry lessons, is a way of working out the concentration of a substance in a solution.

youdao

——今天上午迈克尔在史密斯老师的化学课上迟到了。 ——怎么会呢？据我所知，他上课从不迟到。

—Michael was late for Mr. Smith's chemistry class this morning. —How come? As far as I know, he never came late to class.

youdao

You won't have to solve it in this class, you can wait till you get to 18.03 to start solving these types of differential equations, and hopefully, you'll all want the pleasure of actually solving the Schrodinger equation at some point. So, just keep taking chemistry, 18 03 you'll already have had 18.03 by that point and you'll have the opportunity to do that.

你们不用在课堂上就解它，你们可以等到得到18，03之后,再开始解这些类型的微分方程，希望你们都想得到,实际解薛定谔方程的乐趣,所以，保持来上化学课，你们在那个点将会得到,你们有机会做到的。

麻省理工公开课 - 化学原理课程节选

Oh, by the way, talking about under enrolled subjects, the complementary subject offered by STS called History, Society, and Solid State Chemistry meets Tuesdays and Thursdays at 11:00 in room 2-136.

顺便说一下，关于已经选了的课，由STS开设的补充课程,历史课，社会社和固体化学课,在2-136教室的11点，在周三和周四上。

麻省理工公开课 - 固态化学导论课程节选