Opioids
(opioid 的复数) adj. 类鸦片（引起）的\\nn. 类鸦片活性肽
🗣️ 情景例句
A credit card is very useful when you go traveling.
当然旅游的时候，信用卡很有用。
Be my guest.
别客气。
(A light year is the distance which light travels at 186,000 miles per second in one year,
一光年是光以每秒186，000英里的速度在一年内走的距离，