Serotaxonomy
n. 血清分类学
🗣️ 情景例句
Will you be all right?
你不会有问题吧？
Watch out, it's dangerous.
注意，危险啊！
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。