| 1. | Leaves fall off the trees in the autumn .
秋天，树叶纷纷从树上掉下来。 |
| 2. | You might have heard a pin fall .
（紧张得）连针掉下来也听得见（地寂静）。 |
| 3. | Exterior doors were blown off their hinges .
外面的门被风从门轴上吹掉下来。 |
| 4. | The integrand is not handed down from on high .
被积函数并不是从天上掉下来的。 |
| 5. | The bundle fell with a thud .
扑腾一声，包掉下来了。 |
| 6. | I will show you one that won't come down any more .
我让你看一个，它不会再掉下来了。 |
| 7. | The plaster flaked constantly from ceiling and walls .
天花板上和墙上的灰泥不断地掉下来。 |
| 8. | Of course , it does not drop from the skies , mr. wang .
当然，王先生，它不是从天上掉下来的。 |
| 9. | No snowflake may fall without some reaction of the planet .
没有这个行星的某种反作用，雪片不可能掉下来。 |
| 10. | I looked down and nearly fell off the ladder when i saw a policeman .
我朝下望去，看到是一个警察时，差点从梯子上掉下来。 |
