remain有名词和动词的词性。作名词有剩余物，残骸，遗迹等含义；作动词时，通常用作不及物动词和系动词，有保持不变，剩余等含义。
例句
The three men remained silent.
这3个人保持沉默。
He remained silent for some time.
他好长时间都保持沉默。
The plane remained on the ground.
飞机仍未起飞。
They remained firm friends.
他们依然友情甚笃。
Casualties remained remarkably low.
伤亡人数依然很少。
