iOS CGAffineTransform 动画组合问题！

[UIView animateWithDuration:ANI_DURATION animations:^{

CGAffineTransform tranform = CGAffineTransformMakeRotation(M_PI);
self.benzImageView.transform = CGAffineTransformTranslate(tranform, 0, -100);

} ];
大神大神，怎么解释图片向上移动？:smile: