When I'm building a clock, I will spend hours at this band saw cutting out different pieces.

当我制作钟的时候，我会花几个小时用这个带锯切割各个部分。

(saw cutting) One of the challenges is to make it really thin because ideally it should just be two dimensional.

（锯切）挑战之一是使其变得非常薄，因为理想情况下它应该只是二维的。