Lionite
钨钼铅矿
🗣️ 情景例句
What do you think of the terms of payment?
关于付款条件你们有什么意见？
As a man's heart is, so does he speak.
言为心声。
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。