stumbling block

今天學到一個新詞組：stumbling block
就是絆腳石的意思。

collins cobuild 對 stumble 的解釋
If you stumble, you put your foot down awkwardly while you are walking or running and nearly fall over.
例句
He stumbled and almost fell...
I stumbled into the telephone box and dialed 999.

因此 stumble 就是絆倒的意思

再看一下 block 的字義
A block of a substance is a large rectangular piece of it.
例句
...a block of ice.

沒想到英文跟中文幾乎一模一樣，
那到底是誰學誰呢？