built-up
built-up 英 [ˈbiltʌp] 美 [ˈbɪltˈʌp]
adj. 组合的，拼合的；建筑物多的；以增添组件而加高
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- adj. 组合的，拼合的；建筑物多的；以增添组件而加高
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1. In a built-up area, signals bounce off buildings, trees, and at some frequencies even people.
在建筑物密集的地区，信号会被建筑物、树木反弹，某些频率甚至能被人反弹。
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2. If you've watched analog television in a built-up or hilly area, you may have noticed ghosting.
如果你在建筑物密集的地区或丘陵地区观看模拟电视，你或许会注意到重影。
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3. Many kids enjoy physical activity because it's an effective way to relieve built-up energy and tension.
许多孩子喜爱体育活动是因为这是一个有效的途径来释放累积的能量和紧张情绪。
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