在春季到初秋的时间里，这些线条长度会变长，在赤道周围的斜坡上所显现的颜色也会变得更深。
The lines appear to lengthen and darken on rocky equator-facing slopes from late spring to early autumn.
改变线条的粗细和长度。
线条的长度显示她跑了多远，波峰波谷显示她的速度变化。
Its length shows how far she's gone, and the peaks and valleys reflect her speed.
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