Degradinite
显微硬质煤组分
🗣️ 情景例句
and wrote to his wife Martha.
给他妻子Martha写信。
I'd rather you didn't.
我倒希望您不要关。
The seed was sprayed over the ground in huge quantities by aeroplanes.
飞机把这种草籽大量地撒播在地上。