太太，这些货物具有表面光滑的特点。

These goods, madam, are distinguished by their smooth surface.

youdao

以前，大金字塔表面光滑的白石灰石非常耀眼。

The surface of his pyramid used to shine with smooth white limestone.

youdao

以前，大金字塔表面光滑的白石灰石非常耀眼，塔的顶端很尖。

The surface of his pyramid used to shine with smooth white limestone, and its top came to a sharp point.

youdao

Somehow, if you could manufacture a really smooth frictionless surface, that if you took a hockey puck or something and an air cushion and you give it a push, in some idealized world, it'll travel forever.

如果你制造一个绝对光滑无摩擦的表面,然后在上面放个冰球或者别的什么,或者气垫,然后推它一下,在理想条件下,它会永远运动下去

耶鲁公开课 - 基础物理课程节选