Acetylenedihalide
[建] 乙炔化二鹵, 恒二鹵代乙烯, 二鹵乙烯
??? 情景例句
I'm always prepared to listen.
我總是準(zhǔn)備聽的。
Remember me to your mother please.
請?zhí)嫖覇柡蚰愕哪赣H。
On that day everyone eats mooncakes.
過節(jié)那天大家都吃月餅。