Unstuousness
油性, 润滑性
🗣️ 情景例句
Hello.
哈喽。
Which country do you come from?
你从哪一个国家来？
It seems that man was making a real effort to understand the seasons 20,000 years earlier than has been supposed.
看来人类早就致力于探索四季变迁了，比人们想像的要早20，000年。