Viridite
针铁绿泥石
🗣️ 情景例句
for reading to the kids in the hospital.
为住院的孩子朗读。
He came at a bad time.
他来的不是时候。
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。