Sigma reaction
[医] 西格马反应, δ反应(梅毒的絮凝反应)
🧩 词语组成解析
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
Robbie, maybe you should call them，
Robbie也许你应该给他们打个电话，
They say there's a traffic accident in front of us.
据说在我们前方发生了车祸。
As soon as he opened his mouth, everyone burst out laughing.
但他刚一开口说话，人们便哄堂大笑起来。