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In addition, the talkers used code words.
2018年6月六级真题(第二套)听力 Section B
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So it was pretty certain that the enemy would not be able to understand the code talkers.
2018年6月六级真题(第二套)听力 Section B
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The code talkers played an important part in several battles.
2018年6月六级真题(第二套)听力 Section B
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The code talkers worked mostly in the islands in the Pacific.
2018年6月六级真题(第二套)听力 Section B
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They were called the Navajo code talkers.
2018年6月六级真题(第二套)听力 Section B