youdao

为了压缩数据，LZ 77算法使用对匹配数据的引用来取代数据部分。匹配数据已经通过编码器和解码器传递。

To compress data, the LZ77 algorithm replaces portions of the data with references to matching data that has already passed through both the encoder and the decoder.

youdao

这部分归功于许多替代数据；比如说，里昂证券编制自己的采购经理指数（见注一）。

This is partly because there are alternative numbers to go on; CLSA, for example, produces its own purchasing-managers’ index.

youdao

I mean, you may not understand it with algebra before but some of these sorts of pictures have you seen before?

我是说可能代数部分你没看懂,但你们以前见过类似的图像吧

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