Sn
[计] 顺序号\\n[医] 锡(50号元素)
✅ 同义词
🗣️ 情景例句
You're right.
你说的对。
I did Math this morning.
我今天早上做算术。
Go on until you reach the end. You'll find the park in front of you.
一直走到尽头。公园就在前面。