不需要这么担心，只要马上联系你的系主任就好了。

No reason to get worried like that, just contact your chairperson immediately.

youdao

只要你有决心，你就可以实现你的梦想。

As long as you are determined, you can achieve your dream.

youdao

只要在法国待上几天，你的法语就会很快恢复起来。

Once you've been in France a few days, your French will soon come back.

《牛津词典》

We use the whiteboards alongside one of the walls, where you just write down your name if you have a question.

用其中一面墙壁旁边的白色书写板，如果有问题，你只要在那里写下你的名字。

哈佛公开课 - 计算机科学课程节选

So things can be dangerous. But generally, if you're smart, I think it's a very safe place to live.

因此，危险还是存在的。但大多数情况下，只要你精明点，我认为那儿还是一个非常安全的居住地。

在上西区 - SpeakingMax英语口语达人

As soon as you allow anything to mix, like you might if you want to do any chemistry, entropy changes.

只要你允许物质混合，就像你做任何化学实验的时候要做的，熵就会发生变化。

麻省理工公开课 - 热力学与动力学课程节选