The thought of spiders and snakes makes your skin crawl.

一想到蜘蛛和蛇，你就会浑身难受。

You get a very bad feeling around them. You can say they make your skin crawl.

你对他们感觉很不好。你可以说那些人让你毛骨悚然（skin crawl）。

If you have a phobia of insects or leeches like me, spiders and bugs and things, they might make your skin crawl.

如果你像我一样有昆虫或水蛭恐惧症，你害怕蜘蛛和虫子什么的的话，它们可能会让你浑身难受。

You can say they make your skin crawl.

你可以说它们让你毛骨悚然。

It’s hard to think about and spooky enough to make your skin crawl.

很难想象，也很难让人毛骨悚然。

So number one is to make one's skin crawl. To make your skin crawl.

所以第一是让人毛骨悚然。让你的皮肤爬行。