# Hanun

This is the name of a man. 

# the inhabitants of Zanoah

"the people from Zanoah". This is the name of a place. 

# the Valley Gate

"the Gate of the Valley". Try to translate this as a name, not just as a description.

# They repaired a thousand cubits as far as the Dung Gate

"They repaired a thousand cubits of the wall, from the Valley Gate to the Dung Gate" 

# They repaired a thousand cubits

"They repaired another thousand cubits of the wall beyond the Valley Gate" 

# a thousand cubits

"1,000 cubits." or "460 meters" 

# the Dung Gate

Presumably, refuse was removed from the city through this gate. Try to translate as a name, not just as a description.