Locke's solution
[医] 洛克氏溶液(一种生理盐液)
🧩 词语组成解析
🗣️ 情景例句
I understand.
我了解。
Nothing for nothing.
不费力气，一无所得。
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。