One year ago, when we were in the fifth grade, a new classmate named Jack joined us. He was often late for class and had a strange smell on him, which made the girls not want to be "neighbours" with him, let alone sit next to him. It is said that once, a naughty boy curiously opened his backpack and many crushed soda cans and empty drink bottles that we usually throw into the trash fell out. Therefore, the boys in our class mocked (嘲笑) him as the "trash king".
Later, during a class meeting, our teacher, Ms. Zhang, told us about his story of using garbage to make inventions. It turns out that Jack is not an ordinary elementary school student, but a "garbage-inspired inventor" who has won the city invention award. According to Ms. Zhang, most of his inventions were picked up from garbage dumps (堆). During that class meeting, Jack showed us his invention of a"domestic wastewater separation system".
Afterwards, some of us became deeply interested in these small inventions and started to admire Jack's way of "picking up trash". We even joined him in picking up trash on weekends and during holidays. From then on, we no longer called him the "trash king". Instead, we formed a group of five boys and actively searched for usable materials in various garbage dumps around the city. Under Jack's guidance, we learned that there are many uses for seemingly useless trash. Once, we stayed at school to process the collected materials. Jack mentioned that he was facing a problem with his latest invention—a small cart for buying vegetables that needed to be lightweight. All other materials were solved except for the wheels. How could we find a suitable material for the wheels? We racked our brains (绞尽脑汁) and came up with different ideas, such as using soda cans or taking off the wheels from suitcases. However, Jack reminded us that our group should focus on making inventions from waste rather than causing damage to create them. We were all deep in thought.
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When I got home and drank a bottle of water, I suddenly had an idea.
Jack indeed adopted my suggestion and fixed a row of bottle caps as wheels on his vegetable cart.
