It's going to be tangent to the level surface, right?

它是与等值面相切的，对不对？

youdao

Place the left denim sole piece on to a flat surface, right side down.

将左脚牛仔布鞋底放平，正面向下。

youdao

Place the left denim sole piece on to a flat surface, right side down.

将左脚牛仔布鞋底放平，正面向下。

youdao