The ability to predict the seasons - by tracking the rising and setting points of the sun throughout the year - was key to survival in ancient times.

在古代，跟踪全年日出和日落的时间点以预测季节的能力是关系到生存的关键问题。

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The environment setting named LESSKEY points to a file of key bindings.

名为 LESSKEY 的环境设置指向一个密匙绑定文件。

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Key points include setting the projection of the map file to EPSG: 4326 and defining the WMS layer you want to pull in along with its appropriate metadata (the layer section).

关键的几点是：将地图文件的投影设为EPSG： 4326以及定义想要拉入的wms层及其相应的元数据(LAYER部分)。

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