Mef
abbr. maximal expiratory flow 最大呼气流量
🗣️ 情景例句
Great! Pass me the hammer.
很好！把钉锤给我。
I haven't seen you for age. You haven't been sick, have you?
好久不见。你不是病了吧？
'Not at all,' I answered.
“好的。”我回答说。