1. Every few hundred meters along the wall there are watchtowns, where Soldiers used to keep watch.
    沿城墙每隔几百米就有一个烽火台, 过去常有士兵驻守.

2. Everyone knows that if he shouts in the vicinity of a wall or a mountainside, an echo will come back.
    大家都知道，在墙壁或山腰附近发出的喊声，就会听到回声。

3. Every summer about a dozen journalists gather at a former army training camp north of London to spend the day watching the training of London's special armed police unit.
    每年夏天，总有大约十几名记者聚集在伦敦北部的一个旧军训营，用一整天来观看伦敦特警部队的训练。

4. But in the main, I feel like a brown bag of mixed items propped up against a wall.
    但我大体上还是感觉自己像一只靠墙立着装满各种杂物的棕色皮袋子。

5. Within seconds, a small display unit on the checker´s right shows the name and price of the item; at the same time this information is printed on a strip of paper.
    瞬间功夫，在收款员右手的一个小型显示器上就显示出商品名称、价格，同时这些信息就印在了一张长纸条上。

6. The Great Wall of China, the longest wall in the world, runs across north China like a huge dragon.
    中国的长城, 世界上最长的城墙, 象一条巨龙,逶迤在中国的北部.

7. The arrow embedded itself in the wall.
    箭牢牢地扎进墙里.

8. The wall will act as defence against flooding.
    墙能起防洪的作用。

9. The medieval town was fortified with a high wall and a deep moat.
    这座中世纪的城市用高墙深沟来加强防御。

10. The gram is a metric unit.
    克是公制单位。

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