Each light and dark band together forms one year's worth of growth.

每一条明暗带共同构成了一年的成长。

Their wingtips are black, and their under parts  are a whitish or tan colour with dark bands.

它们的翼尖是黑色的，下部呈白色或棕褐色，带有深色条纹。

The result is that the continuous spectrum of a star has gaps in it, darker bands where different elements absorb different colors.

结果是，恒星的连续光谱中有间隙，不同元素会吸收不同颜色，其间就形成一条条的暗带。

But, its tail was a little different - alternating between light and dark bands, giving it some extra flair.

但是， 它的尾巴有点不同——在亮带和暗带之间交替，给它一些额外的天赋。

On the western side of the mountains is a deep trench, which you can see as the dark blue band on this colorized elevation map.

山脉的西侧有一条深沟，您可以在这张彩色高程地图上将其视为深蓝色带。