Propine acid
[机] 丙炔酸
🧩 词语组成解析
[苏][古]赠送(礼品)
🗣️ 情景例句
She is busy now.
她正忙着呢。
What is the total circulation of this newspaper.
这家报纸总发行量多少？
It's David Chou.
周大卫。