这种文件能较好的表现原图像的信息，但是占用空间比较大，打标效率低。

This kind of files can better reflect the original image information. However, it takes large space with low marking rate.

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由于此前的衰退经常发生在利率还相当高的时候，会有较大的降息空间，因此进行比较的方法之一就是比较百分比降幅。

While previous recessions have often started when rates were far higher -- and therefore had more percentage points to fall, one way to compare cuts is by the percentage decline.

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因此，它需要消耗大量的磁盘空间，当表比较大时这一点尤为明显。

Therefore, it consumes a lot of disk space, especially when the table is too big.

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