hear (sth) through/on the grapevine
从传闻中听说，通过道听途说获悉，听小道消息知道
- I heard through the grapevine that he was leaving - is it true?
我听到传闻说他要离开了——是真的吗？
a figment of sb's imagination
凭空想象的事物，臆造的东西
- Was it just a figment of my imagination or did I hear John's voice in the other room?
是我的想象还是我真听到了约翰在另一间房里说话？
lose sight of sth
忘记，忽略
- I'm worried that we're losing sight of our original objectives.
我担心我们会淡忘我们的初衷。 - Some members of the peace-keeping force seem to have lost sight of the fact that they are there to help people.
维和部队的有些人员似乎忘记了他们到那里是为了帮助人们。
what/it beats me
我不理解，我不明白
- It beats me how she got the job.
我不明白她是怎么得到这份工作的。 - What beats me is why she stays with him.
我不理解她为什么跟他在一起。
have second thoughts about
改变主意；开始怀疑
- You're not having second thoughts about getting married, are you?
结婚的事你没改变主意吧？
the ins and outs of sth
详情，细节
- I know how to use computers, but I don't really understand the ins and outs of how they work.
我会用电脑，但不太明白它的工作原理。
