The Salem Fire Corporation showed up with its trucks and watched the house burn, just making sure that it didn't spread.

塞伦消防公司迅速开着消防车来到现场,眼睁睁看着房子烧掉，只是确保它不会蔓延。

耶鲁公开课 - 公正课程节选

to make sure that they didn't knock it down.

以确保它不被拆毁。

中央车站的历史 - SpeakingMax英语口语达人

So it`s sort of a key issue for children and for adults actually to make sure that When we use a software that has more than one language it has to be completely in each language.

所以无论对成人还是儿童来说,这都是关键问题,当我们使用一款宣称拥有多语种的软件时,必须确保它的每一种语言都是完整的。

麻省理工公开课 - 媒体、教育、市场课程节选

So here, what I'd like you to do is identify the correct radial probability distribution plot for a 5 s orbital, and also make sure that it matches up with the right number of radial nodes that you would expect.

这里，你们要辨认,哪个是５ｓ轨道的正确概率分布，并且确保它和你们,预期的节点数相符合。

麻省理工公开课 - 化学原理课程节选

The curly braces ensure that everything is logically clustered where it should be.

花括号确保了,逻辑上是聚集在一起的，它本来也应该这样。

哈佛公开课 - 计算机科学课程节选

It's basically to get you to load up Python on your machine and make sure you understand how to interact with it.

它基本上让你在你的机器上,装Python语言,并确保你理解如何与它互动。

麻省理工公开课 - 计算机科学及编程导论课程节选

So if we want to put that in chemical terms, we want to make sure we put these in brackets here, and remember, this is the resonance arrow, it's not a reaction arrow, it's a resonance arrow, so make sure you mark it up correctly like that.

那么如果我们把它类比到化学中来，我们要确保它们都放在括号里，而且要记住，这是一个表示共振态的箭头，而不是表示化学反应的，它是一个表示共振态的箭头，因此请务必像这样正确地标记它。

麻省理工公开课 - 化学原理课程节选