1. My father spent hours sharpening his tools on the old grindstone in the garage.
我的父亲在车库里的老磨石上花了几个小时磨削他的工具。

2. The blacksmith used a large grindstone to shape the metal into a sharp blade.
铁匠用一个大磨石把金属打造成一个锋利的刀刃。

3. I need to find a new grindstone for my kitchen knives, as the old one is too worn down.
我需要为我的厨房刀找一个新的磨石，因为旧的已经磨损得太厉害了。

4. The sound of the grindstone turning against the metal was loud and constant in the workshop.
磨石在金属上转动的声音在车间里很大声而持续。

5. The farmer used a grindstone to sharpen the blade of his scythe before heading out to the fields.
农民在出去田地之前用磨石磨快镰刀的刃。

6. The sculptor carefully used a small grindstone to refine the details of his marble statue.
雕塑家小心翼翼地用小磨石来完善他的大理石雕像的细节。