如何使用 "thirty" 造句

1. Thirty minutes of sex burns 85 calories or more .
三十分钟的性可以烧掉85卡路里或更多的热量。
2. These are seventy dollars and those are thirty dollars .
这双是七十元,那双是三十元。
3. An experimental innovator would go back to haiti thirty times .
一个试验型的创作者会重返海地多达三十次。
4. But in thirty years , only seven acres have been uncovered .
但是三十年来,仅找遍了七英亩。
5. Thirty years later , it was covered with trees .
但三十年以后,陆地都被树林所覆盖。