The outline of these muscles is interrupted by three or more transverse depressions indicating the lineae transversae.

这些肌肉的轮廓被三个或更多的横断点打断，这些横断点指示着横线。

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For now, the find solves the mystery of dark streaks that appear and disappear seasonally, called recurring slope lineae.

目前，这一发现解释了为什么火星表面总会季节性出现或消失深色线纹，这种线段的学名叫做“季节性斜坡纹线”。

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