Keyserling
n. (Keyserling)人名；(德、英)凯泽林
🗣️ 情景例句
What is wrong with you?
你怎么啦？
I didn't sleep well.
我没睡好。
Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve.
只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。