Sigma
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
You've really been keeping an eye on quality.
你们的确在质量上下了功夫!
We demand better pay.
我们要求增加工资。
Hi, it's Bob here. Listen. I want you to play in a concert for me.
嗨，我是鲍勃呀！听着，我想要你为我在一个音乐会上演出。