A teacher deserves wide latitude in selecting the method of grading that best promotes learning in her classroom; that is, after all, the prime function of grades.
在选择最能促进课堂学习的评分方法时，教师应具有很大的自由度；毕竟，这是成绩的主要用途。
2
This method performs its conversion by calling various methods to get the latitude and longitude zone and calculating the easting and northing and so on.
该方法执行转换的方法为：调用各种方法获得经纬度区，然后计算以东和以北值，等等。
3
I am using Google maps projection method to calculate the distance between two latitude and longitude.