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示例:<喎"http://www.2cto.com/kf/ware/vc/" target="_blank" class="keylink">vcD4KPHA+PGltZyBzcmM9"http://www.2cto.com/uploadfile/Collfiles/20141215/20141215100409191.png" alt="\">

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缓存和缓冲区别:

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