Ugh, yeah, you have to have a strong stomach to read this book.

呃，是的，你必须有一个强大的胃才能读这本书。

Whether or not you have a strong stomach for it is one thing or another.

你是否有一个强壮的胃口是一回事或另一回事。

Don't look at my screensaver unless you have a strong stomach.

别看我的屏保图片除非你特别不怕恶心。

Don’t go and see this film unless you have a strong stomach.

【stomach】除非你忍受得了，否则不要去看这部电影。