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
He is working on a book about the Vietnam War.
他正在写一本关于越战的书。
Have you been listening?
你有没有在听啊？
It is possible that there is a definite relation between these paintings and the markings that sometimes accompany them.
有时，这种图画与墙壁上的刻痕共存，它们之间可能有一定的联系。