A few ruffian begin chummery make a target, only poor clever boy or long-standing.

同宿舍几个光棍开始搞对象了，唯有瘦猴还是老大难。

He finds himself in a den of ruffians.

他发现自己的巢穴中。

The ruffian flicked the knife open.

歹徒用手腕轻轻一振亮出刀刃。