我做任何事情都不能半心半意。我做每件事都必须百分之百地投入。

I can't do anything halfheartedly. I have to do everything 100 percent.

《柯林斯英汉双解大词典》

如果你在一段关系中没有百分百地付出，你就会一直在想对方是否也付出了百分百。

If you don't give your hundred percent in a relationship, you'll always keep thinking if the other person has given his or her hundred percent.

youdao

没有什么能百分之百地防止黑客入侵。

Nothing is 100 percent hacker-proof.

youdao

So, in terms of what it is that you need to prepare and bring with you for the exam, you need to bring your MIT ID, especially if you haven't been showing up regularly to your recitations and you aren't 100% sure if your TA knows exactly who you are, you need to make sure you have your MIT ID with you.

那么，关于你需要做哪些准备,考试可以带哪些东西，你需要带着你的学生证，尤其是如果你没有经常地参加,习题课,你不能百分之百保证,你的助教确实认识你，那么你更得确保自己到时带着学生证。

麻省理工公开课 - 化学原理课程节选