S.r.
[医] 沉降速度, 沉降率, 西格马反应, σ反应(检梅毒的絮凝反应)
🗣️ 情景例句
You shouldn't have.
不该这样破费的。
A faithful friend is hard to find.
益友难得。
By working at tremendous speed, the men managed to get the dish on to dry land before the wave returned.
工人们动作迅速，终于赶在那股大浪返回之前把盘子拽到了岸上。