Ad grat. acid.
[医] 至适宜酸度
🧩 词语组成解析
ad
[æd]
n. 广告;网球中的优势分advantage. ad in;
🗣️ 情景例句
If someone doesn't buy it before then,
如果在此之前没有人买走的话。
If I buy that car, I'll have to borrow some money.
如果我要买那辆车的话，我必须借一些钱。
Excuse me. May I have a piece of paper, please?
请问，我可以要一张纸吗？