如果您不希望在一系列操作之后产生的累积损失会影响到彩色图像的图像品质，通常png是个不错的选择。
PNG is normally a good choice for color images where you don't want accumulating loss to affect the quality of the image after a series of manipulations.
还有可能更糟的是这种损失会累积—存储多个版本的艺术品每次都会造成质量下降。
What is potentially worse, is that this loss can accumulate-saving multiple versions of artwork can cause degradation with every save.
另一件需要牢记的事情是：损失是累积的。
The other thing to bear in mind is that the loss is cumulative.
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