问纬度/经度与1英里的换算是多少？

EN

<script type="text/javascript" 
  src="http://maps.googleapis.com/maps/api/js?libraries=geometry&sensor=false">
</script>

    //the distance function defaults to km.  
    //to use miles add the radius of the earth in miles as the 3rd param.
    //earths radius in miles == 3956.6
    var distance = 
      google.maps.geometry.spherical.computeDistanceBetween(
            /* from LatLng */, 
            /* to LatLng */, 
            /* radius of the earth */
      );

    if (distance <= 5) { //less or equal to five miles
        var marker = new google.maps.Marker({
            map: map,
            position: //LatLng
        });              
    }