Dibromodifluormethane
[建] 二溴二氟甲烷
??? 情景例句
Not likely.
不可能。
My brother's in the army.He was just promoted to the rank of major.
我的兄弟在軍隊工作.他就被提拔為少校。
The things on show were all used a hundred years ago.
展出的都是100年前使用的東西。