1. They are laying a railroad track.
    他们正在铺设一条铁路轨道。

2. The serious investor needs a proper ´portfolio´----a well-planned selection of investments, with a definite structure and a clear aim.
    认真的投资者需要一份正规的投资组合表 -- 一种计划很周密的投资选择，包括你的投资结构和明确的目标。

3. The computer will automatically keep track of the number of items and their price.
    电脑会自动记录物品的数目和价格。

4. Her selection of a hat took a long time.
    她挑选一顶帽子花了很长时间。

5. He says nothing about the poor selection of goods in the shops, or about those unfortunate people who have to travel from the country to the city every day to get to work.
    他也不说商店货物品种单调，以及那些每天不得不从乡下赶到城里工作的不幸的人们。

6. He said that someone might be spying on the station and the pilot was ordered to keep track of the strange object.
    他说可能有人正对基地进行侦察，因此命令那个飞行员跟踪那个奇怪的飞行物。

7. He runs round the track or plays ball games.
    他或者沿跑道跑跑步或者打打球。

8. Don´t draw a red herring across the track.
    不要转移别人对主要问题的注意力。

9. As we bumped over the dusty track, we swerved to avoid large boulders:
    我们在尘士飞扬的道路上颠簸，车子东拐西弯，以躲开那些大圆石。

10. And I never can keep track of how many months old he is.”
    而且我从来都记不住他有几个月大。"

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