当然，我们不能因此全盘否定李斌的挣扎与努力。
Helium is used to pressurize tanks and help push fuel into the engines. Without proper helium flow, the rocket cannot safely fly. Because the upper stage is hard to reach at the launchpad, NASA rolled the stacked rocket back into the Vehicle Assembly Building, the sky-scraping hangar where it was originally put together.
，详情可参考WPS下载最新地址
Что думаешь? Оцени!，更多细节参见51吃瓜
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