The initial English translations of Verne _were_ considerably bowdlerized, sometimes with large chunks cut out or summarized in the interests of making them more "kids books" than adult ones.

There are some modern translations that might be better on this front.

Edit: Mentioned elsewhere in this thread: <https://19thlevel.blogspot.com/2012/08/jules-verne-translati..., which I have now bookmarked!