词汇讲解：
1. launch n. 发射
例句：I saw the launch of the rocket yesterday.
我昨天看了火箭发射。
2. transport vt. 运送例句：A bus transported us from the airport to the city.
一辆公共汽车把我们从飞机场送到城里。
3. spacecraft n. 航天器，宇宙飞船例句：Spacecraft are vehicles used for flight in outer space.
宇宙飞船是用于太空飞行的交通工具。
4. orbit n. 轨道例句：They put a weather satellite into orbit round the earth.
他们把一颗气象卫星送入环绕地球的轨道。
5. capacity n. 容量，容积例句：The theater has a seating capacity of 800.
这个剧场可容纳八百名观众。
6. mission n. 任务，使命例句：The minister was sent to Spain on mission.
这位部长奉命前往西班牙。
7. equipment n. 设备，装备例句：We must fit the expedition out with the best equipment.
我们必须向探险队提供最好的装备。
8. astronaut n. 太空人，宇航员例句：There're three astronauts in the spacecraft.
在这艘宇宙飞船里有三名宇航员。
9. sample n. 样品，样本例句：The salesman brought some samples of his firm's products.
推销员带来了一些他公司的产品货样。
10. contemplate v. 深思，细想，仔细考虑例句：He contemplated what the future would be like.
他思忖着将来会如何。
11. reduce vt. 减少，降低例句：The price was considerably reduced.
价格大幅降低了。
12. deal n. 交易，协议例句：It was probably the best business deal I ever did.
那也许是我曾经做过的最好的一笔生意。
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