to be at the bottom of  something
be
æt
āt
at
ðə
dhē
the
bɒtəm
botēm
bottom
əv
ēv
of
something

“be at the bottom of something ”的英语定义和含义

to be at the bottom of something
01

是真正原因, 是背后的原因

to be the direct cause of something, particularly something unpleasant 
习语
非正式
例子
The detective believed that a personal grudge was at the bottom of the crime. 

金钱问题才是他们大多数争吵的真正原因。

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