Endorphin
[化] 内啡肽
🗣️ 情景例句
Rules are meant to be followed, not broken.
规则制订出来是让人遵守，而不是让人破坏。
Thereis no wool so white but a dyer can make it black.
羊毛再白，也能染黑。
Don't you remember?I had to water it every day.
你记得了吗？我不得不每天浇水。