en_tn_condensed/jer/52/05.md

until the eleventh year of King Zedekiah's reign

until Zedekiah had been king for more than ten years (See: rc://en/ta/man/translate/translate-ordinal)

eleventh year

"year eleven" (See: rc://en/ta/man/translate/translate-ordinal)

So the city was besieged

This can be translated in active form. Alternate translation: "So they besieged the city" (See: rc://en/ta/man/translate/figs-activepassive)