Methoxyprophylline
美索茶碱
🗣️ 情景例句
One is as old as one's heart.
心多老人多老。
Once bitten, twice shy.
一次被咬，下次胆小。
Because they destroy so many insects, and insects include some of the greatest enemies of the human race.
因为它们能消灭那么多的昆虫，其中包括一些人类的大敌，