laborious

• Chemical degradations are laborious and time-consuming .
  化学降解法复杂且费时间。
• Their installation proved a laborious undertaking .
  要来安顿这些人，确实是一件麻烦的事情。
• This is a little laborious .
  这有点太嗦。
• You may have the impression that this process is usually laborious .
  你可能认为这种方法是艰难的。
• The computation of approximate solutions was an extremely laborious task .
  近似解的计算是极其繁重的工作。
• The distance seemed interminable, and the walk was most laborious .
  距离好象无穷无尽似的，走起来真够吃力。
• 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。
• We should not despise plain features, nor a laborious yet honest occupation .
  我们不应该看不起相貌平常的人，也不应该看不起辛苦而正直的职业。
• On the contrary, i took up another resolution, which was more safe, though more laborious .
  相反地，我作了另外一个决定，虽然比较费劲，却比较安全。
• His anxious and laborious efforts were likely, at last, to be crowned with the happiest success .
  他那番急切而辛苦的努力大概终于就要获得最愉快的成功了。