Prefractionation
初步分馏
🗣️ 情景例句
Morning, Grandpa.
早安， 爷爷。
If your prices are more favorable than those of your competitors we shall send you our order.
如果你方价格比其他竞争对手的优惠，我们将向你们订货。
Who was first? Who was second? Who was third?
谁是第一？谁是第二？谁是第三？