11. | A traveller should train himself to observe the odd customs of exotic peoples. |
| 旅行者应该学会观察异国民族的奇特习俗。
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12. | Observe the following dos and don'ts. |
| 请遵守下列注意事项。
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13. | In 1948, he went to Lake Kivu in the Congo to observe a new volcano which he later named Kituro. |
| 1948年他去了刚果的基伍湖,对一座后来被他命名为基图罗的新火山进行观察。
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14. | Most animals we commonly observe do in fact age as we do, if given the chance to live long enough; |
| 我们通常看到的大多数动物,即使能让它们活得足够长久的话,也会像我们一样衰老的。
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15. | Children should learn above all how to observe good manners at table. |
| 小孩首先应学会餐桌礼仪。
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16. | The far side of the moon is difficult for us to observe . |
| 我们很难观察月亮的另一边。
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17. | We obey [ observe ] the regulation that no cars (should) be parked there. |
| 我们遵守那里不许停车的规定。
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18. | Lonny began to observe a curious phenomenon. |
| 兰尼开始注意到一个奇怪的现象。
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19. | You must observe silence. |
| 你必须保持安静。
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20. | observe someone narrowly |
| 密切注意某人
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