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
Uh, we're home now, Ellen.
噢 ，我们现在到家了， Ellen。
Action speak louder than words.
事实胜于雄辩。
After I had sat down, he said that business was very bad.
待我坐下后，他说生意非常不景气。