Mmhg
[医] 毫米汞柱
🗣️ 情景例句
I would like to send this by registered mail, please.
我想把这封信挂号寄出。
I felt it advisable to do nothing.
我认为最好什么也别做。
No one noticed the boy as he crept off.
当男孩从船里爬出来时，谁也没有发现他。