peripheries
n.
外围( periphery的名词复数 );
边缘;
周围;
例句:
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The peripheries are lined by respiratory epithelium.
表面是线性排列的呼吸道上皮.
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Tunnel vision of the senses, peripheries blurred and spiralled into a Turner-style canvas-drama on the cornea.
来自BBC
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When you do not have adequate level of saturation, they pick you off on your peripheries.
来自VOA