Sigma complex
[化] σ络合物
🧩 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
but he has chickens and cows and all.
但他有奶牛等等。
That is why we have asked you to come tonight.
这也就是我们今晚请你们来的原因。
Hello!
你好！