Ppt.
[医] 沉淀[物], 制备的, 精制的
🗣️ 情景例句
Good. Tell Mr. Gao at the factory to keep up the good work.
很好，请告诉工厂的高先生继续努力。
What do you think about it?
你对此怎么看？
The workmen struggled fiercely and one of them lost his temper.
两个工人奋力抗争，其中一个发了火，