目录地址如下：
/Users/{username}/Library/Containers/com.tencent.xinWeChat/Data/Library/Application Support/com.tencent.xinWeChat/2.0b4.0.9/Backupmac操作系统微信备份目录
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目录地址如下：
/Users/{username}/Library/Containers/com.tencent.xinWeChat/Data/Library/Application Support/com.tencent.xinWeChat/2.0b4.0.9/Backup