lay a finger on

基本解释

I'll kill you if you so much as lay a finger on my sister again.
如果你再敢碰我妹妹一指头，我就杀了你。
"Certainly, " the Chinese man said, "but on one condition. If you so much as lay a finger on my daughter, I will inflict upon you the three worst Chinese tortures known to man.
“当然，”那个中国人说，“但有一点，如果你胆敢碰我女儿一下，我就会对你实施尽人皆知的中国三大酷刑。”
Suppose Billy takes his brother with him; will the mean, tough boy down the street dare lay a finger on him?
如果毕利带他哥哥去，街上那个卑鄙粗鲁的男孩还敢碰他一下吗？
http://dj.iciba.com

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.