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.
Handling Live Updates & Dynamic Changes: What if a bridge is closed due to a live map update you just downloaded?，这一点在服务器推荐中也有详细论述
，推荐阅读heLLoword翻译官方下载获取更多信息
Regular vs Irregular Palettes，详情可参考搜狗输入法下载
Фото: Илья Наймушин / РИА Новости