underground railroad
英
美
- n.地下铁道；(美国内战前)废奴主义者帮助奴隶逃跑用的地下逃亡道
详细释义
Noun:
-
secret aid to escaping slaves that was provided by abolitionists in the years before the American Civil War
双语例句
- There was not an underground in Beijing before.
北京从前没有地下铁道。 - The construction of underground railways has eased traffic pressure on the ground.
地下铁道的修建减轻了地面交通的压力。
用作名词 (n.)
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