🧩 词语组成解析
n. [化]酰基
🗣️ 情景例句
OK. I'll be back in a few minutes.
好，过几分钟我就回来。
He likes playing the harmonica.
他喜欢吹口琴。
I know! smiled Lucy. They have steps, and they begin with L!
“我知道！”露茜笑着说，“它们有阶梯，并且这个单词是以L开头的！”