Since the number of levels remains the same regardless of the map extent, map tiles can be cached by the browser in multiple levels.

因为级别的数量仍然保持一致而不用管地图的现实范围，地图瓦片可以被浏览器在多级别的情况下进行缓存。

youdao

But this is the first map to address the thickness of the ice as well as its extent.

但是这次是第一幅既有范围，又有厚度的地图。

youdao

Automatic allocation of secondary partition header pages for extending the extent map.

用于扩展区段映射的二级分区头文件页的自动分配。

youdao

Click on the interactive map for an illustration of the extent to which piracy is a problem in 59 countries, as well as the economic costs of the current boom in black-market materials.

FORBES

The group then verifies the incoming reports and places them on a Google map of Egypt, creating a web-based documentation of the extent of the problem.

CNN: December 21, 2012 -- Updated 1222 GMT (2022 HKT)