Ad substance
[医] 突触传递物质
🧩 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
Examinations are at hand.
考试在即。
He that gains well and spends well needs no account book.
收支正当，无须记帐。
The play may begin at any moment.
戏随时都有可能开始。