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
In many countries, politicians are associated with money and scandals.
在许多国家，政客与金钱和丑闻分不开。
Certainly not.
一定不是。
We have five different ones.
五种