Keep straight on for two miles.

一直往前走两英里。

Keep straight on for two blocks.

一直往前走，走过两个街区。

I'm trying to keep straight.

我努力做到为人正直老实。

Keep straight on for two blocks.

一直往前走，走过两条马路。

Keep straight on until you get to the bank.

继续向前走直到那个银行。