Ugh, in an ideal world I wouldn't need to do that sawing action, but here we are.

呃，在理想的世界中，我不需要做那种锯切动作，但我们在这里。

The grandfather was busy in his little shop, and a sound of hammering and sawing could be heard.

在他的小店里忙得不可开， 时不时能听到锤打锯切的。

(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。

Place your pineapple on it's side, and secure it in place with one hand while you top and tail it, using a sawing action.

将菠萝放在一边，用一只手将其固定到位， 同时使用锯切动作将其顶部和尾部。