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
I just solved the mystery.
我刚刚把那个谜底解开了。
Please don't be frightened by my dog.
请不要害怕我的狗。
Mr. Huawei always has a lot of meetings to attend.
华威先生总有开不完的会。