🧩 词语组成解析
n. [化]酰基
🗣️ 情景例句
They're open until nine o'clock.
他们开到九点。
I enclosed some photographs in my letter.
我在信封里装了一些相片。
the line that the pen was drawing wriggled from side to side.
笔所画出的线就会左右摆动。