Backfilling gang
[机] 回填组
🧩 词语组成解析
[机] 回填
gang
[ɡæŋ]
n. 帮派，团体;盗贼等的)一帮;（工具，机械等的）一套;〈美俚〉棒球队;
vt. 使结成一帮;成群地袭击;
vi. 结伙行动;
🗣️ 情景例句
I hope he's good when we're away.
我希望我们不在的时候他很乖。
A word is enough to the wise.
对明智者一言已足。
This would solve the problem of ventilation, for if a train entered this tunnel, it would draw in fresh air behind it.
因为如果有列火车开进隧道，它就把新鲜空气随之抽进了隧道。