This was the heaviest and most fatiguing work of all.

这真是最粗重、最让人疲惫不堪的工作了。

It was fatiguing sometimes to try to measure up to her standard of perfection.

力求达到她的完美标准，有时是很累人的。

It was so thick, and the foliage so dense, that it was quite fatiguing to proceed.

它是那么茂密，树叶是那么稠密，要往前走是很累的。

She feels boxed in at the fatiguing work and wishes greater freedom to develop her ideas.

她在令人疲劳的工作中受到束缚，希望能有更大的自由去发展她的想法。

This was a great loss of time, and was also very fatiguing.

这样不但浪费许多时间，而且也非常吃力。