Ppt.
[医] 沉淀[物], 制备的, 精制的
🗣️ 情景例句
I've never seen anyone as strict as my boss.
我就没见过像我们老板这么严厉的人。
He has come to be recognized as an expert in the problem of overpopulation and food supply.
由于他的经验促使他终于成为了公认的人口过剩和食物供应问题的专家。
There is only enough spring water to supply the needs of the houses, so we have to pump from the river for farm use.
泉水只能满足家庭生活用水，因此我们必须从河里抽水以用于农业生产。