Valida
n. 有效霉素
🗣️ 情景例句
World-class athletes are extremely fit.
具有国际水平的运动员体格非常好。
Love is a sweet torment.
爱情是一种甜蜜的折磨。
The problem now facing humanity is: What is going to be done with all this knowledge?
用这些知识去做什么？