伤口的余毒还在。

The poison was in the wound, you see.

可见宗法观念的余毒决不能轻视。

It is thus clear that the residual influences of clannishness must not be underestimated.

过往的余毒仍在许多领域让今人头痛不已。

As in so many areas, the legacy of the past afflicts the present.