Collaurum
[医] 胶体金
🗣️ 情景例句
They talk about things like family, work, school or sports.
他们常常谈论家庭，工作，学校或运动。
Why are you always late? You're fired!
你怎么老是迟到？你被解雇了！
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？