perpetual

The region is in a state of perpetual war.这一地区战争不断。

He seems to have a perpetual grin on his face.他似乎总是面带笑容。

(humorous) the perpetual student/bachelor长期留级生/单身汉

Lack of government funding has been a perpetual [=constant] problem for the organization.这个组织一直面临的问题是缺乏政府资助。

the perpetual demands of parenthood作为父母没完没了的麻烦事