/ˈsʌb.ɝːb/ noun
an area where people live that is outside the centre of a city 郊区；城外
suburban
Suburban means relating to a suburb. 郊区的 [ADJ n]
例：
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…a comfortable suburban home.
…一个舒适的位于郊区的家。
Downtown places are in or towards the centre of a large town or city, where the shops and places of business are.