在概略，光滑，湿，油腻或者干燥表面的标记。

Marks on rough, smooth, wet, oily or dry surfaces.

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从表面上看，这些行为带有理智的、有目的的、自由行为的所有标记。

On the surface, it bears all the marks of intelligent, purposeful, and free action.

youdao

内表面刻材料标记。

Material mark, sub surface.

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它是一个表面的标记。

It was the overt sign.

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它是一个表面的标记。

It was the overt sign.

youdao