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There was only a narrow gap between the bed and the wall.
床和墙之间只有一条窄缝。
《牛津词典》
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The anode fall region is also a very narrow gap like the cathode fall region.
热阴极辉光放电的阳极区与阴极区一样，是一个很薄的区域。
youdao
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The anode fall region is also a very narrow gap like the cathode fall region.
热阴极辉光放电的阳极区与阴极区一样，是一个很薄的区域。
youdao