S. op. s.
[医] 必要时
🗣️ 情景例句
Oh, a new baby!
噢， 一个新生儿！
Don't climb a tree to look for fish.
勿缘木求鱼。
He wanted to buy a $300 watch for his wife,
他走进一家高级商店，要为妻子买一块价值300英镑的手表。