Sentence examples for this is impenetrable from inspiring English sources

This is impenetrable and can reflect more ego, hubris and board capture.

Despite the inherent hydrophilicity of the molecular chains, this organised structure is impenetrable to water and cannot be swelled or dissolved by common solvents.

The psychology of the relationship between Henry and Anne is impenetrable at this distance, but contemporaries did not understand it either.

The crowd is impenetrable.

The buffer zone is impenetrable.

"It's not like Beverly Hills is impenetrable.

At times the language is impenetrable".

Without an understanding of higher math, it is impenetrable.

The style, too, is impenetrable to most non-geeks.

The answer most often heard in Washington is impenetrable.

To non-geeks, ML is impenetrable, and therefore intimidating.