Assistants in record shops are used to receiving "humming queries" : a customer comes into the store humming a song he wants, but cannot remember either the title or the artist.

音像店的店员已经习惯了接受“哼唱问询”：一位顾客走进店来，把他想要，却又记不起名称或者歌手的那首歌哼唱出来。

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The method throws an OutOfStockException when no books are available with that title and author or a InsufficientCreditException if the customer has no sufficient funds to pay for the book.

当不存在与title和author匹配的书籍时，该方法抛出Out Of StockException，或者当客户没有足够资金为书籍付款的情况下，该方法抛出InsufficientCreditException。

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With mortgage products, for example, the Islamic bank holds the title to the property and rents it back to the customer.

CENTERFORSECURITYPOLICY: Center For Security Policy