2. 外语
  3. The BBC has just successfully ________________ (演示了一套新的数字无线电传送系统).

The BBC has just successfully ________________ (演示了一套新的数字无线电传送系统).

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问题 The BBC has just successfully ________________ (演示了一套新的数字无线电传送系统).
选项
答案demonstrated a new digital radio transmission system
解析
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大学英语六级

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