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我有一个滚动视图的封面流（带有视图的封面流（带有图像和标题））。当我尝试旋转封面流时，以下代码图像变得模糊。谁能帮我？
CGAffineTransform 变换 = CGAffineTransformRotate(CGAffineTransformIdentity, SHKdegreesToRadians(90));
subImageScrollView.coverFlowView.transform = 变换；