Natrium
n. 钠\\n[医] 钠[11号元素]
🗣️ 情景例句
Matches.
火柴。
I'm working on it.
我正在努力。
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。