Sigma
[计] 求和\\n[医] σ(希腊文第十八个字母)
🗣️ 情景例句
Uh-hum.
嗯哼。
Let me see. She has 30 minutes Tuesday afternoon.
让我查查，她周二下午有30分钟。
At that time, however, she was not only the largest ship that had ever been built, but was regarded as unsinkable,
当时，这艘轮船不仅是造船史上建造的最大的一艘船，而且也被认为是不会沉没的。