在大多数国家，猎杀某些濒危物种是违法的。

Hunting certain endangered species is ___illegal in most countries.

将车停在消防栓前是违法的。

It is ___illegal to park your car in front of a fire hydrant.

警方正在严厉打击非法药物的销售。

The police are cracking down on the sale of ___illegal substances.