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1·One white, the other - burnt umber.

一个是白色，另一个是焦棕色。

2·I've looked at this picture very often but I'd never really noticed this shadow before, he suddenly said, pointing to a patch of burnt umber near the elbow.

“这张画我看过好多次，但从没注意过这一块阴影。”他突然说，并指出画中手肘处的一块棕色焦痕。