M acid
[化] M酸
🧩 词语组成解析
🗣️ 情景例句
How many people are there in your family?
你家里有几口人？
Idleness is the root (or mother) of all evil (or sin or vice).
懒惰是万恶之源。
Mary has written ten letters today.
马力今天写了十封信。