谁能详细的归纳remain的用法，多谢拉~

1。To continue in the same state or condition:
保持不变：继续保持同一种状态或情况：
These matters remain in doubt.
这些事情仍然值得怀疑
2。To continue to be in the same place; stay or stay behind:
留下：逗留在同一地方；停留或者留下：
We are remaining at home.
我们留在家里
3。To be left after the removal, loss, passage, or destruction of others:
余留：在其他事物移走，丢失，走开或毁坏之后仍留下来：
Only a few trees remain.See Synonyms at stay 1
只留下了一些树参见 stay1
4。To be left as still to be dealt with:
尚待：剩余的仍需要处理的：
A cure remains to be found.
尚待发现的疗法
5。To endure or persist.
持久或坚持

6。留下；遗留
I went to the city, but my brother remained at home.
我去了城市，可弟弟留在了家里。
7。继续
Peter became a judge but John remained a fisherman.
彼得当了法官，但约翰仍然是个渔民。
He's determined to remain loyal to the team whatever comes his way.
他决心不管发生什么事都忠于球队。
The death of the innkeeper still remains a mystery.
客栈老板之死仍然是个谜。

习惯用语：it remains to be seen
还要看情况