Ad def.an.
[医] 至昏厥时
🧩 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
One is as old as one's heart.
心多老人多老。
Why are you standing behind the door?
你为什么站在门后？
No, not that one. The red one.
不，不是那本。是那本红皮的。