Sigmas
n. 希腊字母表的第十八字母（∑, σ）( sigma的名词复数 )
🗣️ 情景例句
Do I know Pete Waters?
我可认识Pete Waters？
There is no medicine against death.
人间哪有不死（回春）药。
Hasn't Mary told you?She invited Charlotte and me to dinner this evening.
玛丽没有告诉你吗？她邀请我和夏洛特今晚去吃饭。