Difluoride
二氟化物
🗣️ 情景例句
I happened to over hear what he said.
我碰巧听到了他所说的话。
I'd rather dream than study my chemistry.
我还是做我的梦，总比研究化学好。
'Mr. Lane was defeated in the elections.
“莱恩先生在大选中被击败了，