Acetophenanthrene
[化] 乙酰菲
🗣️ 情景例句
This winter has been a cold one.
目前来看，今年冬天算比较冷的。
Never (or Don't) trouble trouble till trouble troulbes you.
切莫自寻麻烦。
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。