// 易错点1：边界处理 - 移除所有数字时直接返回"0"
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Wöchentliche Ausgabe des SPIEGEL als E-Paper
Back in 2008, Dr Selvarani Elahi was caring for her newborn daughter while growing horrified about the scandal of melamine-tainted infant formula in China. At least six babies died from kidney damage linked to the chemical.
computer systems used by banks were fundamentally batch-mode machines, and it