lie behind的用法和樣例：
例句
用作動(dòng)詞 (v.)
- I wonder what was behind Karl's sudden visit.
我不明白卡爾突然到訪(fǎng)的原因。 - The reason behind decisions we must make today is regrettable.
想到今日吾人非做出決定不可的原因，大家都引以為憾。
詞匯搭配
- lie behind 曾經(jīng)發(fā)生
