讲解文本：
tight （关系）紧密的，关系铁 My brother is tight with this manager of the computer store. He can get you a discount. 我哥和这个电脑商店的经理很铁，他可以给你打个折扣。 I'm very tight with Mike. He is my best friend. 我和Mike关系很铁，他是我最好的朋友。
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