1. Especially the very young, the elderly and cigarette smokers are at high risk.
    尤其是孩子、老人和吸烟者受到的危害最为严重。

2. Bruce engaged low gear and drove at a terrifying speed.
    布鲁斯接上了低档，开车速度令人害怕；

3. Bruce went into a low gear and drove at a terrifying speed, keeping the front wheels astride the crack as he followed its zigzag course.
    布鲁斯挂上慢档，把两只前轮分别搁在裂缝的两边，顺着弯弯曲曲的裂缝，以发疯的速度向前开去。

4. Why is she looking so dejected , in such low spirits?
    她为什么神情如此沮丧？

5. We were, however, worried about our nearest neighbours, whose farm was low lying and who were newcomers to the district.
    然而，我们为我们的近邻担忧，因为他们的农场地处洼地区，而且他们是这地区的新户。

6. Where the cost of government is high, resources for development are correspondingly low.
    凡是政府管理费用高的地方，用于发展国家经济的资金就会相应地减少。

7. It will be low because it will be necessary to have only one man looking after each job,
    行政管理费用的降低的原因是：每项工作只需要一个人去完成，

8. We were, however, worried about our nearest neighbours, whose farm was low lying and who were newcomers to the district.
    不过，我们很为我们的近邻担心。他们的农场地势低洼，而且他们又新来乍到。

9. With scarcely a glance at the items, the clerk sweeps them across an aperture, where a special marking on each item is scanned by a low-powered laser beam inside the machine, connected to a remote computer.
    收款员几乎不看商品，只是把商品从机器上的孔眼处一扫而过，机器里的低能量激光对商品上的一个特殊标志进行扫描，这台扫描机与另一台电脑相联。

10. Women of child-bearing age are at greatest risk, since their monthly bleeding is a major source of iron loss.
    育龄女性危险最大，因为月经是铁流失的重要原因之一。