Or,he or she can place the hot glass on a metal table called a marver to shape the form by rolling it back and forth.

VOA: special.2009.09.16

And that is determined by the shape of the form.

这就是由容器的形状所决定的。

哈佛公开课 - 幸福课课程节选

He took two real cowboy boots and made a hard form using their shape.

VOA: special.2009.09.09