| 1. | The inscription of the monument has worn away over a long period of time .
年深月久，碑文已经磨灭了。 |
| 2. | The ground state of hydrogen is stable for an indefinitely long period of time .
基态氢可以在无限长的时期内处于稳定状态。 |
| 3. | The bank was formed by the mud and sand deposited here over a long period of time .
河里的泥沙淤积在这里，年深日久便成了沙洲。 |
| 4. | An overload of ethanol over a long period of time produces fatty liver, a degeneration of liver tissue .
过量的乙醇，经长时间积累，将使肝组织退化而产生脂肪肝。 |
| 5. | Secular trend is the value of the variable that tends to increase or decrease over a long period of time .
长期趋势指的是在一个长时期内趋向增加或减少的变量的值。 |
| 6. | It is apparent that the ball spends a longer period of time to the left of line yy than to the right .
显然，滚珠停留在YY线的左边的时间比滚珠停留在YY线的右边的时间更长。 |
| 7. | It argues that some dissolution of traditionalism was necessary for economic growth to be sustained over a long period of time .
这种方法认为，要使经济长期持续下去，解除某些传统主义思想是必要的。 |
| 8. | Some waste rots away over a long period of time
有些食物要经过好长时间才会腐烂。 |
| 9. | This may turn out to be a long period of time
这可能会是一段相当长的时间。 |
