en_tn/deu/02/36.md

Aroer

This is the name of a city on the north bank of the Arnon River. (See: rc://en/ta/man/jit/translate-names)

Valley of the Arnon

"Arnon" is the name of a river. See how you translated this in Deuteronomy 2:24. (See: rc://en/ta/man/jit/translate-names)

there was not a city too high for us

This negative statement is used to emphasize their success in battle. This can be stated in a positive form. Alternate translation: "we were able to defeat the people of every city even if the city had high walls around it" (See: rc://en/ta/man/jit/figs-litotes)