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. But there is still fiery hot rock deep inside.
    但是地球内部仍有滚烫的岩浆。

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. We could see a bluebottle on the rock.
    我们能看见一只绿头苍蝇在岩石上.

6. Water is purified by passing through rock.
    水在穿透岩石的过程中获得了净化.

7. When Kizzy was four or five, the African would take her by the hand and lead her round the farm and teach her names of things in his native tongue: one word for tree, another for rock, another for cow.
    当吉西四五岁的时候，老非洲就拉着她的手带她去农场转上一圈，教她用土著语说出各种事物的名称：一个词代表着“树”，一个词代表“岩石”，另一个词代表“母牛”。

8. Water is in rock deep under the ground, in natural holding areas -- in storage.
    水深藏于地底下的岩层里、在天然蓄水区里 -- 水就储存在那里。

9. 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.

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

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