The first part of the system, the Oxygen Generation System, was launched on space shuttle Discovery in July 2006.

第一部分是氧气生成系统，已经在2006年送到空间站。

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The first part of the system, the Oxygen Generation System, was launched on space shuttle Discovery in July 2006.

第一部分是氧气生成系统，已经在2006年送到空间站。

youdao