1、意思

To continue to be in the same state or condition 及物动词 & 系动词

2、=be

Remain 强调状态的稳定性或持续性

+un开头的形容词（unclear,unchanged,unanswered,unproven)

+名词 secret, enigma

3、例句

Whether the actor killed himself or was murdered remains a secret.

It remains unknown whether the actor killed himself or was murdered.

4、翻译

Mid-autumn Festival remians one of the most faverite festival in China

5、I have beeen working in Hangzhou since last month, whether I will stay here or not remains unclear.