space speed 还是spacial speed 是太空速度的意思吗

space speed 还是spacial speed 是太空速度的意思吗 sp_ _ 除了space,speed,spaag的 英语翻译on the space还是on space 是 a internet connecting speed 还是a internetonnection speed是 a internet connecting speed 还是a internet connection speed？ speed speed with a high speed 还是at a high speed?China has developed -- such a high speed. “在太空中”是in space还是in the space? 在太空是in the space还是on space? 是 on the space station 还是at space station on the space station 还是 in the space station呢? space是可数还是不可数?closet space呢? space是可数还是不可数?closet space呢? net speed is slow 还是slowly,为什么? space space The journey might take only a very short time in space shuttles that travel at the speed of light. One day,space shuttles will travel to Mars____the speed of light.A.in B.at Cwith D.to why?