It decreases. If you're still not completely up on the periodic trends, that is stuff that's going to be on the first exam, so make sure that you're able to do this without taking too much time to think about it.

它会降低，如果你还没有完全掌握周期性规律，而这是第一次考试要求的内容，因此请务必做到不用,想太久就能做到这点。

麻省理工公开课 - 化学原理课程节选

or totally grammatically correct or might sound awkward,

也不用在乎语法是否完全正确，或者听起来是否别扭，

想学好英语吗？ - SpeakingMax英语口语达人

I want to just use it, I shouldn't have to worry about what variables I use inside of it, I have shouldn't have to worry about where that is in the code, I should be able to just abstract it away. And that's what we want to add today, are those two things.

我只是想使用它,我不用考虑我在这段代码中,使用的是什么变量,我完全不用考虑代码的内容,只要抽象就好,我们今天想补充的内容就是这两点。

麻省理工公开课 - 计算机科学及编程导论课程节选

Precision is impossible; don't worry about that.

完全精确是不可能的,大家不用太在意

耶鲁公开课 - 古希腊历史简介课程节选

I'm going to post it in a format which will be black and white and easy to print out so you don't have to worry about this.

我会把它做成黑白板式上传,方便同学打印,所以完全不用担心笔记问题

耶鲁公开课 - 心理学导论课程节选