你什么事也不必做—只管悠闲享受乘车旅行的乐趣好啦。

You don't have to do anything—just lie back and enjoy the ride.

《牛津词典》

他们给我回信告诉我不必做它。

They wrote back to me and told me I didn't have to do it.

《柯林斯英汉双解大词典》

他们不必做任何事情，只是在一旁闲着，享受生活。

They didn't have to do anything except sit back and enjoy life.

《柯林斯英汉双解大词典》

Well if I-- you know, with let me say it differently. I don't need to worry about how checking is done, it's handled inside of that function.

好，如果你们知道，抱歉，让我们换种说法,我不必担心检查工作,是则会么做的，这是在方法体内部进行的。

麻省理工公开课 - 计算机科学及编程导论课程节选

You don't have to try to get the change of law You don't have to get the supreme court to change its mind. All you have to do is to get out your credit card and go online and it's done.

不必试图修改法律,也不必游说最高法院,做出什么改变，你需要做的,只是掏出你的信用卡，登陆网站，然后一切搞定。

普林斯顿公开课 - 人性课程节选

Jews didn't have to--they could observe the Sabbath, they didn't have to do things on the Sabbath that they didn't want to.

犹太人不必。。。可以过安息日，安息日那天他们不用做不想做的事。

耶鲁公开课 - 新约课程节选