Once they had the ink, Cho and his colleagues built roll printers to transfer ink to the final material.

这种油墨一创造出来后，乔和他的同事便造出滚式印刷机，以便将油墨转移到最终所需印刷材料上。

youdao

Once they had the ink, Cho and his colleagues built roll printers to transfer ink to the final material.

这种油墨一创造出来后，乔和他的同事便造出滚式印刷机，以便将油墨转移到最终所需印刷材料上。

youdao