校园劳动锄草的时候，我发现许多同学带的锄头都容易松动，经常掉下来，基至有的同学在洗锄头时，还把锄头掉到池塘里了。这样，不仅劳动效率低，浪费时间，还会出现不必要的损失。于是，我萌发了发明锄头紧固器的念头。怎样才能使锄头不易松脱呢？开始，我想从锄头“库”穿过一 When I was working on campus, I found that many of my classmates’ hoes were loose and often fell off. Some of my classmates dropped hoes into the pond while they were hoeing. In this way, not only is labor efficiency low, time is wasted, but unnecessary losses also occur. So, I germinated the idea of ​​invented hoe fastener. How to make hoes not easy to loose it? At first, I want to go through one from the hoe “library ”