That makes one want to eat; extremely delicious.
令人垂涎的'；诱人食欲的；美味的。
I want you to be extremely quiet, because this is no joke.
我希望你们绝对安静，因为这不是开玩笑。
It's still extremely difficult to get tenure.
要取得终身职位仍然极其困难。
It's a useful introduction to an extremely complex subject.
这是对一门极为复杂的学科的有益入门教程。
Operation of the device is extremely simple.
这个装置的操作非常简单。