1. The temperature today is seventy degrees Fahrenheit.
    今天气温是华氏七十度.

2. You must have been driving at seventy miles an hour.
    你刚才一定是以每小时70英里的速度开车。

3. Seventy million years later, the first fish appeared.
    7,000万年后，首次出现了鱼。

4. Seventy-two search planes, plus dozens of ships, failed to turn up any sign of the missing aircraft.
    72架搜索飞机加上几十艘船，都没能找到失踪飞机的任何踪影。