spend time 花时间；消磨时间；度过时光；花费时间
You should spend time on basic training, not on those flourishes.
要练好基本功，别尽学花架子。
Don't spend such a lot of time in dressing yourself.
别花那么多时间来打扮自己。

sleep with与…发生性关系
It's immoral to sleep with someone of you're not in love.
你如果不爱一个人却与其同居，这是不道德的。

find it hard发现很难；觉得很难
The new students find it hard to adapt to this new school.
新生发现很难适应新学校
There are times I find it hard to sleep at night.
有好多时候，我感到难以入睡.