And the Chinese also added something the Egyptians never used: lead oxide.

铅氧化物。

The discovery, Gonzalez said, confirmed that da Vinci most likely used lead oxide to thicken and help dry his paint.

冈萨雷斯说，这一发现证实了达芬奇很可能使用了氧化铅来增稠和帮助干燥他的油漆。

Leonardo is thought to have melted lead oxide powder, which has an orange color, in linseed or walnut oil to make it thicker and dry faster.

人们认为，莱昂纳多在亚麻籽或核桃油中熔化了橙色的氧化铅粉，以使其变得更稠，干燥更快。