Sigma
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
Sure. The number is... five five five...seventeen twenty.
没问题 号码是555-1720。
You are darker than I am.
你比我黑。
In the first instance, we would be looking for plant life, rather than 'little green men'.
首先我们要寻找植物，而不是那种“小绿人”。