Ethynylation
炔化, 乙炔化作用
🗣️ 情景例句
The advanced class starts at ten o'clock.
高级健身课十点钟开始。
Come on, honey.
过来，亲爱的。
Bill Frith's garden is larger than Joe's.
比尔。弗里斯的花园比乔的花园大，