They fall out, they get polished up, they make skipping stones, like here, see that?

它们脱落，被磨亮，变成跳石，就像这里，看到了吗？

When cut into slabs and then polished up, they can produce a very striking piece of wood.

树瘤被裁成平板，经过打磨，就能成为上佳的木料。

He got out his best tall hat and polished it up.

他拿出他最好的高帽子，擦亮了它。

He selected a few of the tales, made them much longer, and polished up the language.

他挑选了一些故事，将它们加长，并润色了语言。

He was afraid of tarnishing them with his breath, and he polished them up again, examining them top and bottom, and smiling to himself.

他甚至害怕呼吸都会使它们失去光泽，再次把它们擦亮，检查它们的顶部底部，开心笑着。