... 中心毂 Center hub 中心环结构 Center ring structure 中馈式天线列 Center-fed array ...
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The green ring structure near the center of the image is about 77 light-years across.
图片中间的绿色环状结构的跨度大概有77光年。
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Powerful radiation from the stars is sculpting the surrounding dust, creating the ring-like structure seen at the center of this frame.
强烈的辐射穿透了周围的尘埃，形成了图片上的环状结构。
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