在撒哈拉沙漠下方，横贯非洲中部的植被带颜色非常深，因为植物由于光合作用吸收了大多数太阳光。
The belt of vegetation that crosses Africa below the Sahara is very dark because most of the sunlight is absorbed by plants for photosynthesis.
这个恒星系统在400光年远处，以多彩的环绕物质而著名，包括一个红色发射星云和众多深棕、浅棕色的尘带。
The star system, located only 400 light years away, is distinguished by its colorful surroundings, which include a red emission nebula and numerous light and dark brown dust lanes.
我充满希望地发出一声怪叫，急促向前，深吸了一口气，然后扑通一声，连人带树熊一起投进了水塘。
With a manic cry of hope I scuttled forward, took a deep breath and flung myself in, complete with koala.
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