航天飞机是往来于地球与太空之间的机器,它由四部分组成:轨道飞行器,燃料箱和两个火箭助推器。轨道飞行器看上去像一架飞机。它运载着工作人员。巨大的燃料箱和飞行器相连。它容纳着飞行器发动机所需的燃料。火箭助推器在燃料箱的两侧。火箭在两分钟内燃尽燃料,从高空落下,降落伞让它缓慢的坠入大海,然后船只把它们带回来。巨大的燃料箱在八分钟后也会用尽燃料,它也会坠落并支离破碎的落入大海。与此同时,飞行器顺利的进入了轨道。飞行器最多能容纳七名实验人员,他们或许会发射人造卫 The shuttle is a machine that travels between Earth and space. It consists of four parts: orbital aircraft, a fuel tank, and two rocket boosters. Orbital aircraft looks like a plane. It carries the staff. Huge fuel tank and aircraft connected. It holds the fuel needed for the aircraft’s engine. Rocket booster on both sides of the fuel tank. The rocket burned fuel in two minutes and dropped from high altitude. The parachute slowly let it fall into the sea, and the ship brought them back. Huge fuel tank will run out of fuel after eight minutes, it will fall and broken into the sea. At the same time, the aircraft successfully entered orbit. The aircraft can hold up to seven laboratory personnel, they may launch man-made Wei