该标记再次用到从地理定位 API 接收到的纬度和经度。
The marker once again uses the latitude and longitude that you received from the geolocation API.
尽管如此，如您所见，地理定位的W3C标准提供了很简单的API。
However, as you have seen, the W3C standard for geolocation provides a very simple API.
这是地理定位中重要的API。
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