Underground railroad
地下铁道
🧩 词语组成解析
🗣️ 情景例句
Just listen to the sound.
听听这些声音。
A good conscience is a continual feast.
白日不做亏心事，夜半敲门心不惊。
There were hardly any trees on the island and there was no water, but this did not prove to be a problem.
岛上几乎没有一颗树，也没有淡水，但这不算什么问题。