Cosmo
n. 科兹摩（男子名）；（美）[俚]都市性
🗣️ 情景例句
I know.
我知道。
Nothing is more precious than time.
世上最宝贵的莫过于光阴。
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。