1. He spent many hours in deep contemplation.
   他花了多个小时专心思考。
2. A ferry crosses the river every hour.
   渡船每小时过河一次。
3. The train is an hour behind time.
   火车晚点一小时。
4. She can do 3000 keystrokes an hour.
   她在一小时内能按键3000次。
5. The steamer makes 20 knots an hour.
   这艘轮船的时速是20海里。
6. The train makes 70 kilometres an hour.
   这火车的时速为70公里。
7. Please set forward your watches an hour.
   请把你们的表拨快一个小时。
8. The final ascent took only half an hour.
   最后那次登山只花了半小时。
9. The descent of the mountain took two hours.
   下山花了两个小时。
10. It flies at about 900 kilometers an hour.
    它以每小时900公里的速度飞行。
11. It's fully an hour since he left.
    他走了至少有一小时。
12. They spent an hour mooching around the shops.
    他们花了一个小时逛商店。
13. You were driving at ninety miles an hour.
    Have anything to say for yourself?你当时的驾驶时速已达90英里,你有什么要辩解的吗?
14. This is his accustomed hour to go to bed.
    这是他就寝的惯常时间。
15. The descent of the mountain took nearly two hours.
    下山差不多花了两个小时。
16. The recommended dosage is one tablet every four hours.
    规定剂量为每四小时服一片。
17. You have a scant hour in which to pack.
    你有一小时来整理行李。
18. It took me an hour to skim the book.
    我费了一个小时把这本书草草地读了一遍。
19. It took me ten hours to tabulate the results.
    我花了十个小时把结果制成表格。
20. The bare narration of the fact took two hours.
    单是这事实的叙述就花了两小时。

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