| 1. | It is easier to say that the equivalence of mass and energy is an experimental fact .
说质能等效性是实验事实，那是毫不费力的。 |
| 2. | We were obliged to resort to the primitive and most exhausting resource of towing the boat .
我们不得不采取最原始的也是最费力的办法拉纤。 |
| 3. | The job of preparing data in this form is laborious, and cost a great deal of money .
以这种方式准备数据的工作是很费力的，并且要花许多钱。 |
| 4. | It was one of the most pretentious pieces of legislation ever presented to congress to that time。
这是直到当时提交国会的最费力的法案之一。 |
| 5. | When this exacting task was completed, the huge woman heaved a sigh and pushed the letter toward jerusha and abner .
干完这件费力的事情之后，胖妇人喘了一口气把信推到耶鲁雅和艾布纳面前。 |
| 6. | We next come to the extremely arduous task of determining and eliminating the extraneous reading produced by misalignment .
下一步就要进行一项特别费力的工作，即确定和消除由于安装误差所产生的额外读数。 |
| 7. | I got bogged down in a long laborious lawsuit
我因费时、费力的诉讼而陷入困境。 |
| 8. | It won ' t be arduous ! i have lots of ideas
这又不是什么费力的活！我还有很多法子！ |
| 9. | P sb . in suspense tough demanding or troubling ; difficult
困难的费力的或麻烦的，困难的 |
| 10. | They can tell fairly easily if someone ' s lying or not
它能够毫不费力的判断一个人是否撒谎 |
