Sigma
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
just half a mile down the road from the Watermill.
从Watermill往下走只要半英哩。
How are you going?Are you going by boat?
你怎样去?坐船去吗？
What do you think she would like, dear?
你想她会想要什么呢，亲爱的？