| 1. | For the uses of billion see the examples at hundred. |
| 关于billion?渐╬?k?úhundred词条中的示例。
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| 2. | The Hubble telescope was launched into space by NASA on April 20,1990 at a cost of over a billion dollars. |
| 哈勃望远镜于1990年4月20日由国家航空航天局发射升空，耗资10多亿美元。
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| 3. | Only the Earth provides ideal conditions, and even here it has taken more than four billion years for plant and animal life to evolve. |
| 只有地球提供理想的条件，而即使在这里，植物和动物的进化也用了40亿年的时间。
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| 4. | entail an annual expenditure of ten billion dollars |
| 每年需要花费100亿美元
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| 5. | have a total storage of eight billion cubic feet of water |
| 具有80亿立方英尺水的总贮存量
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