en_tn_condensed/num/04/05.md

When the camp prepares

Here "camp" refers to all of the people in the camp. Alternate translation: "When the people prepare" (See: rc://en/ta/man/jit/figs-metonymy)

to move forward

This refers to the people moving to another location. Alternate translation: "to move to another location" (See: rc://en/ta/man/jit/figs-idiom)

the screening curtain

This refers to the curtain that kept people from being able to see into the most holy place.

cover the ark of the testimony with it

The word "it" refers to the curtain that separated the most holy place from the holy place.