伊斯兰国已经接近崩溃

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caliphate – n. the office of an important Muslim leader or the land he governs

archeological – adj. of or related to the study of past human life and activities

valley – n. a stretch of land between hills or mountains

apartment – n. a room or set of rooms that is used as a place to live

infrastructure – n. public services, such as roads, bridges and water treatment centers