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

呃，在世界中，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.

老爷爷在他小店里忙得不可开， 时不时能听到锤打锯切声音。

(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，因为情应该只是二维。

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。