它用利剑打击，然而没有一种利剑是单刃的，每把剑都有双刃，一边伤了人，另一边便伤了自己。

Now, no sword is simple. Every blade has two edges; he who wounds with the one is wounded with the other.

youdao

它用利剑打击，然而没有一种利剑是单刃的，每把剑都有双刃，一边伤了人，另一边便伤了自己。

Now, no sword is simple. Every blade has two edges; he who wounds with the one is wounded with the other.

youdao