To cause to slide inward or outward in overlapping sections, as the cylindrical sections of a small hand telescope do.

使…在重叠部分中向里或向外滑动，如小型手动望远镜的圆柱部分的叠缩。

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Over ten routes are drawn on the map, which look like hair falling down to the ground. Some of them are short, some long, and the overlapping and cross sections are where two persons meet.

在地图上画出了十几条路线，像飘落地上的发丝，有长有短，重叠和交叉部份是两个人相遇地方。

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