Definition
A drug that is prohibited by law.
非法藥物
The police seized a quantity of illegal substances and arrested several suspects.
警方查獲了一批非法藥物並逮捕了幾名嫌疑人。
Possession of an illegal substance is a serious criminal offense.
持有非法藥物是嚴重的刑事犯罪。
The use of illegal substances can cause serious damage to one's health.
使用非法藥物會對健康造成嚴重損害。