Precipitinogen
n. [医]沉淀原, 沉淀素原
🗣️ 情景例句
I major in English and minor in French.
我主修英语，副修法语。
We must arrive there on time.
我们必须准时到那儿。
What will be the population of these countries in the year 2000?
2000年不太发达国家的人口将是多少？