and see the gates remain closed.

不要再打开城门
I will not deny entry to those

我不能把冒着生命危险
who have risked life to break from their masters.

逃离主人的奴隶拒之门外
A thing born late in any regard.

无论如何都为时已晚了
Many unknown to us have already passed through gate to join cause,

已经有很多不知底细的人加入了我们
if outward form does not conceal darker intent.

谁知道他们藏着什么坏心思
If there stand such among our ranks,

如果真有这样的人
we must see them exposed.

我们一定要查出来
You scale a mountain of ifs.

你们说了那么多如果
I would add to its peak.

我便来说一个大的
If you are struck down by one of your errant flock,

如果混进来的奸贼把你给杀了
how would they fare absent guidance?

队伍没人带了怎么办