形容詞 ceaseless:

1. uninterrupted in time and indefinitely long continuing
   同義詞：constant, incessant, never-ending, perpetual, unceasing, unremitting

1. His ceaseless chatter began to annoy me.
   他不停的嘮叨使我厭煩起來(lái)。
2. Spray slaps the coast ceaselessly.
   海浪不停地拍打著海岸。
3. The girl's ceaseless cry makes us feel pity for her.
   這個(gè)小女孩不停的哭聲使我們對(duì)她感到同情。

cease.less

adj.（形容詞）
Without stop or pause; constant.See Synonyms at continual
不停的：未停止或中斷的；持續(xù)的參見(jiàn) continual

【引伸】
cease.lessly
adv.（副詞）
cease.lessness
n.（名詞）