In radio communications, one of the three regions which form the ionosphere.

在无线电通信中, 电离层的三个分区之一.

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Three regions had the signature of a tumour suppressor gene, but many looked like fragile sites.

3个区域具有肿瘤抑制基因的信号, 但多数看起来象脆性位点.

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By the end of the study coverage was available in all three regions.

重要的是,鱼不再被浪费,并且价格变量得到了显著地下降.

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However, three regions remain in their control that are strategically advantageous for them to retain control.

然而, 三个有战略意义的地区仍然被保留以有助于他们继续保持对该地域的控制.

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From north to south, were the three regions: nomadic, dry farming and paddy regions.

从南至北展开3个经济区: 北方草原游牧区 、 黄河流域的旱地作物区、南方水稻栽培区.

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