1.turn back to 返回到，插回

His group was forced to turn back and take an alternate route.
他的小组被迫返回并选择了另一条路线。

It was too late to turn back.
回头已经太晚了。

2.sort of 有点；有几分地

I really feel aggrieved at this sort of thing.
我真为这种事感到委屈。

You can't put that sort of fear into words.
那种恐惧无法用语言表达。