(of animals or plants or their cells) to produce and release a liquid

Saliva is a liquid secreted by glands in or near the mouth. 唾液是由嘴中或嘴部周围的腺体分泌的一种液体。

to put something in a place where it is unlikely to be found

He was arrested at the airport with a kilo of heroin secreted in his clothing. 他在机场被捕时衣服里藏了1公斤海洛因。