Alkanedioic acid
[化] 链烷双酸
🧩 词语组成解析
🗣️ 情景例句
You've been working late
你一直工作到很晚
Never swap (or swop) horses while crossing the stream.
骑渡中流莫换马。（指危难时不宜做大变动）
The instrument was bought by my grandfather many years ago.
是我祖父在很多年以前买的。