1.To build may have to be the slow and laborious task of years. To destroy can be the thoughtless act of a single day.
建设可能是一项不得不经历多年的慢速而艰辛的任务，破坏可能是一种只需要单独的一天的轻率的行动。
2.He said: "(This road is) a huge, laborious task, unlikely to need to be completed. "
他说：“（这条路是）一个巨大、费力的任务，不可能在需要之前完成。”
3.The computation of approximate solutions was an extremely laborious task.
近似解的计算是极其繁重的工作。
4.Of course, we should also be clearly seen that the standards of haul of is far better than long to laborious task.
当然我们还应当清醒地看到，标准执行的路程远比制定要艰苦漫长的多。
5.Of course web search engines take away the laborious task of sifting through paper index cards.
当然，网络搜索引擎避免了在图书索引卡中筛选的繁重任务。
6.Making a road from Ledo to China was also an immense, laborious task.
从利多建筑一条通往中国的公路，也是一个巨大而艰苦的任务。
7.They had the laborious task of cutting down the huge tree.
他们接受了伐大树的艰苦工作。
8.Only 22 at the time, Tombaugh was given the laborious task of comparing photographic plates.
当时汤博年仅22岁，肩负着比较照相底片的艰巨任务。
9.For incredibly large numbers, this is a laborious task. The calculations can take a computer many years to complete.
处理超级大数，这是一个很困难的任务。该运算会让计算机花很多年时间来完成。
10.One such boring and laborious task is preparing a table of contents.
解析内容表就属于比较单调、费劲的任务。