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“Rack”是一个英语单词，主要用作名词和动词，有各种不同的意思。首先，名词形式时的“Rack”是指（贮存用）架子或行架式搁物架。其读音为 ['rækk] 。例句可以是 "My desk top is so cluttered up with stuff I need to keep in my desk so I can add more to the rack."。
其次，作为动词时，“rack”有“使痛苦，折磨”的意思，其读音为 [ræk] 。例句可以是 "He was beaten and tortured for days, trying to force him to confess, but he refused to rack."。
然而，在某些情况下，“rack one's brain”中的“rack”通常被理解为“绞尽脑汁”，这时它的读音为 [ræk] ，例句可以是“I've been racking my brain trying to remember where I left my keys.”（我一直在绞尽脑汁地想记起我把钥匙放在了哪里）。
另外，“rack one's nerves”中的“rack”也有使神经紧张的意思，读音为 [ræk] ，例句可以是“The news of the competition made me rack my nerves.”（比赛的消息让我神经紧张）。
不过具体应用中的单词意义还会受上下文、词语关系等语境因素影响，以下为您举十个含有“rack”的句子，分别是其为名词、及作为动词应用的例句。
（名词）：On each level the inquirers meet with ranks of implacable monster exhibitions called racks and aquaria displays showing samples of previous treasurers behind, instead of cloisters on my worst manners, this endless nightmare.
（动词）：As a member of the staff of the police department, he must rack his brains day and night to maintain law and order.
另外还有：“I was so nervous about making a good impression at my interview that I racked my nerves to remember all the information about the company I had researched.”
“He was racking his brain trying to figure out what he had done wrong.”
“The suspect was being racked with guilt after he was caught stealing.”等。
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