1. Even these hard parts may crumble to dust.
    甚至这些坚硬的部分也会破碎成粉末。

2. Eventually the officer's retirement arrived, and he too stopped working.
    最后，这个海关官员也到了退休年龄，也要停止工作了。

3. But scientists are working hard to turn them into realities.
    但是, 科学家们正在努力工作, 以便把想法变成现实.

4. By working at tremendous speed, the men managed to get the dish on to dry land before the wave returned.
    工人们动作迅速，终于赶在那股大浪返回之前把盘子拽到了岸上。

5. But Hunter worked so hard that he overstrained his heart.
    但是，亨特工作十分刻苦以致心脏过于劳累。

6. But she had had a hard life and it had knocked the youth and good looks out of her.
    但是她曾经过着很艰辛的生活，这种生活使她失去了青春和美貌。

7. By keeping their pupils working unnecessarily long at some little part of the subject, they often weaken their interest in learning the language.
    让学生们在一些细小的方面花去过多的时间反复练习，这往往会减弱他们学习语言的兴趣。

8. Besides working to improve building structures, people in areas where earthquakes are common need to prepare for the possibility of a great earthquake.
    除了设法改善建筑结构外，地震频发区的人们也需要为可能发生的大地震做好防备工作。

9. We´ve been working all week without a moment´s leisure.
    我们整星期一直工作, 没有片刻空闲.

10. We sought long and hard but found no answer.
    我们费力多时也未找到答案.