焦痕平原挖掘场。
“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。
"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.
用户在选购水龙头时，在光线充足的情况下，可将产品放在手里在伸直距离观察，龙头表面应呈乌亮如镜、无任何氧化斑点、烧焦痕迹；
With enough sunlight, when choosing a faucet, you can put the faucet on your hand, and observe it carefully, the surface of faucet should looks like a mirror, no oxidized spot, no signs of scorch.
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