Alkanoic acid
[化] 链烷酸
🧩 词语组成解析
🗣️ 情景例句
Advertising, bills, bills, advertising.
广告 ，帐单 ，帐单 ，广告。
Excuse me I couldn't come.
对不起我不能来。
I was very tired when I arrived home. I'd been working hard all day.
我到家时非常累。我一整天都在玩命地干！