遗忘普罗旺斯

　　记住该记住的，忘记该忘记的！ Space shuttles go back and forth between earth and space. The first one flew on April 12, 1981. A space shuttle has four main parts. They are the orbiter, the fuel tank, and two rocket boosters. 航天飞机是在地球与太空之间来回穿梭的机器。航天飞机第一次试用是在1981年4月12日。航天飞机由四部分组成：轨道飞行器，燃料箱和两个火箭助推器。

　　The orbiter looks like an airplane, it carries the crew. A huge tank is attached to the orbiter. It holds fuel for the orbiter’s engines. A rocket booster is on each side of the tank. These fires on liftoff. In two minutes, the rockets run out of fuel and fall off , parachutes slow their drop to the sea. Then boats tow them to shore. Rockets can be used as many as 20 times .the big tank runs out of fuel in eight minutes. It falls and breaks apart over the sea .now the orbiter enter its orbit.

　　轨道飞行器看起来像一架飞机，它运载着工作人员。巨大的燃料箱携带着飞行器发动机所需的燃料。并与飞行器相连，火箭助推器的功用是促进起飞。它们连接在燃料箱两侧，火箭在两分钟内用尽燃料，就从高空掉下，降落装置让它缓缓坠入大海，然后由船只把它们拖回海岸。它也会从高空坠落，支离破碎地掉入海中，而此时，飞行器则顺利飞入轨道。

　　There may be up to seven crew members on board the orbiter. They do tests. They might launch satellites. In 1999, a shuttle went up to fix the Hubble telescope. The Hubble is as big as a bus. The shuttle caught it. The telescope was held in the cargo bay. That’s an open place like the back of a pickup truck. The crew worked out in space to make repairs, they wore space suits. They were attached to the shuttle by a long line. A robot arm put the Hubble back in orbit.

　　飞行器最多能载入7名工作人员，他们的工作是做实验，或许也会发射人造卫星。1999年，一架航天飞机被派往太空修理哈勃望远镜，哈勃望远镜像一辆公交车一样大，航天飞机首先要扣住望远镜，然后固定在仓库中，货物舱像一块空地，工作人员穿着太空服在天空修理望远镜，身后用一条长长的绳与航天飞机相连，修理完后，机械手将哈勃望远镜送回轨道。

　　When it’s time to come home, the orbiter’s engines fire. This slows the shutter, and it drops from orbit. Tiles protect the shuttle from heat caused by entering earth’s atmosphere. The shuttle then acts like an airplane, it glides to landing on a runway.

　　当飞行器从太空返航时，要点燃飞行机器的发动机，用来减慢机体的速度，使其脱落轨道进入大气层，这时机体外部的特质陶片可以保护航天飞机免受机体与地球大气层摩擦产生的高温，最后航天飞机就像飞机一样滑翔在降落的跑道上。