在实验室的工作很有趣，但你必须小心。

Lab work is fun but you must be careful.

youdao

但这也有点令人害怕，所以你对此必须小心。

It's also a bit scary, so you have to be careful about it.

youdao

但这并不简单，工作环境十分危险，你必须非常非常小心，做任何事都必须安全第一。

But it is not that simple, it is a very dangerous work environment and you have to be very very careful, everything has to be done with safety as the first priority.

youdao

帮助这些家伙们可能会有很多好处，但你必须要小心，什么事情能帮，什么事情应当拒绝。

Helping these folks can be very rewarding, but you have to be careful about where to draw the line and know when to decline.

youdao

你必须小心！但你不能把他丢在这个炎热、荒无人烟的地方——方圆几百公里之内什么都没有——没有水，也没有吃的。

But you can't leave him here - there is nothing for hundreds of kilometres around - no water or food in this hot, empty place.

youdao

你必须小心！但你不能把他丢在这个炎热、荒无人烟的地方——方圆几百公里之内什么都没有——没有水，也没有吃的。

But you can't leave him here - there is nothing for hundreds of kilometres around - no water or food in this hot, empty place.

youdao