They seem to be wide lines drawn with some white material.
这看似是由白色材料绘制而成的宽线。
The white material at the top of the cliff, near the planet's North Pole, is carbon dioxide ice.
照片上显示的悬崖上的白色物质是位于火星北极地区的干冰。
Photographic evidence settles the debate over the nature of the white material seen in photographs sent back by the craft.
航天器传回的照片上有白色的物质，摄影证据终结了关于这种物质究竟是何种自然物的争论。
That's an abstraction, though, and "White Material" is anything but abstract.
然而那很抽象，可《白色物质》绝非抽象。
That's an abstraction, though, and "White Material" is anything but abstract.
然而那很抽象，可《白色物质》绝非抽象。
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