用opengl es的旋转函数旋转物体时，物体总是绕自己的坐标轴旋转，这样的旋转看起来乱七八糟，有没有实用的解决办法？
光阴似箭催人老，日月如移越少年。
Translate the object so that the world coordinates are at the desired rotation axis position--->Rotate the object-----> Then translate the object back to the original position
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Translate the object so that the world coordinates are at the desired rotation axis position--->Rotate the object-----> Then translate the object back to the original position