If you lay a finger on my girlfriend, I will kill you.

如果你敢碰我的女朋友一根毫毛，我宰了你。

youdao

If you lay a finger on me, I will not leave a handful of that black hair upon your head.

要是你碰我一下，你头上黑乌乌的头发就休想留下一把。

youdao

My nephew often speaks to other kids "If you lay a finger on me, you'll be in serious trouble".

我侄儿常对其他小孩说“如果你敢动我一根汗毛，你的麻烦就大了。”

youdao

And that means that, whether a project team within a megacorporation or an independent band of Scandinavians with a dream, we should be glad of this crush of operating systems, even if we never lay a finger on them.

FORBES: Nobody wants to be Mothra. Somebody has to be Mothra.