Nitrokalite
硝石
🗣️ 情景例句
It's stopped snowing.
雪停了。
Don't bother.
不用麻烦了。
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。