Zone
District
noun
This earth belt is the area within the belt, which holds this area of earth in. It is separate from the rest of the earth, making it its own zone or district.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
ここは、あなた以外には安全地帯です。
This is a safe zone for everyone but you.