Piperin
n. 胡椒碱
🗣️ 情景例句
I'm sorry, Carl.
很抱歉 Carl。
The bird that can sing and won't sing must be made to sing.
生来能唱的鸟，不愿唱也得叫它唱。
It is not a simple competition for a fixed amount of food determined by the physical environment,
它已不是为了争得物质环境所决定的有限食物而进行的简单竞争了，