砧板,宰鱼切肉用的,家家户户都有。一般的砧板多为实木的,又厚又重。用的时间久了,中间便会凹陷,因为,木头毕竟敌不过钢刀。后来,人们发明出了塑料,发现用这种物质也能制作砧板,又轻又薄,使用寿命也挺长,不过,得是无毒的安全塑料。最近,发明家又孜孜不倦地研究开发出一种新奇的 Cutting boards are used for cutting fish and are used by every family. The common chopping boards are mostly solid wood, thick and heavy. For a long time, the middle of it will sag, because, after all, wood is no match for steel knife. Later, people invented plastics and found that it can also be made of chopping boards with this material. It is light and thin and has a long service life. However, it is a non-toxic safety plastic. Recently, the inventor has been tirelessly researching and developing a novelty.