Sigma bond
[化] σ键
🧩 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
It sounded like a dog barking right here.
好像有只狗就在这儿叫。
Give a dog a bad name and hang him.
欲加之罪，何患无词。
He will do anything but work.
只要不是干活，他干什么都行。