Shorterizing
表面火焰淬火, 表面火焰淬硬
🗣️ 情景例句
When will you be able to deliver?
您什么时候可以交货？
Every man is the son of his own works.
种瓜得瓜，种豆得豆。
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。