对印刷商来说，打样很贵，因为他不仅要做印版，但还需要把它们安装在机器上，并用正确的颜色作一些印张。
To make a proof is quite costly for the printer because he not only has to make the printing plates but also needs to install them on the machine and make a few impressions in the correct color.
如果确须打样，我们的qx必须在机器调试时到印刷机跟前，在印刷前核对打样。
If we really need to see them, our QX should go to the printing press when the machine is being set up and check the proofs just before printing starts.
如果确须打样，我们的qx必须在机器调试时到印刷机跟前，在印刷前核对打样。
If we really need to see them, our QX should go to the printing press when the machine is being set up and check the proofs just before printing starts.
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