General version
[化] 基本方案
🧩 词语组成解析
🗣️ 情景例句
Hello. Is Susan there?
喂，是苏珊吗？
In good years corn is hay, in ill years straw is corn.
丰年五谷贱如草，荒年稻草贵如粮。
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。