I’m so glad the mid-term exams are over and done with.

【over】我很高兴期中考试总算结束了。

Do I sometimes embitter the present by regretting things that happened in the past-that are over and done with?

2. 我是否有时会因后悔过去发生的事情而对现在感到痛苦——那些事情已经结束了？

I've seen them do it in the wild, and it's over and done with in a matter of seconds.

我见过他们在野外这样做，几秒钟之内就结束了。

Human time is linear -- a neat continuum stretching from a past that is deemed to be over and done with towards the future that is supposed to be pristine, untouched.

人类的时间是线性的——一个整齐的连续体，从被认为已经结束和结束的过去延伸到应该是原始的、未被触及的未来。

" Of course, you can't saw sawdust" ! Mr. Shedd exclaimed. " It's already sawed! And it's the same with the past. When you start worrying about things that are over and done with, you're merely trying to saw sawdust" .

“当然不能锯木屑”！谢德先生惊呼道。 “它已经被锯掉了！和过去一样。当你开始担心已经结束和完成的事情时，你只是在试图锯木屑”。