By the second half of the year all the world's big economies had stopped shrinking, and optimists hope this will build into a sharp v-shaped bounceback.

截止到今年下半年以来，所有世界大的经济体已经停止了衰退，并且乐观的预期似乎将建立在一个剧烈的V型经济反转图之上。

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This command USES the named spec file to build a binary package (-bb for "build binary") with verbose output (-v).

此命令使用指定的spec文件构建一个二进制包(- bb表示“构建二进制包”)，还会生成详细的输出(- v)。

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Collier mentioned that "the goal of OpenStack is to support multiple hypervisors, although currently the release build is lacking support for both VMware and Microsoft's Hyper-V."

Collier提到，“OpenStack的目标是要支持多种虚拟服务器，尽管当前发布的版本还不支持VMware和微软的Hyper - V。”

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