题目

An easily biodegradable（可生物降解的）material that could be “part of a global answer” to single-use plastic pollution has won its inventor, British designer Lucy Hughes , the international James Dyson Award.Hughes' Marina Tex bioplastic is strong and flexible, making it a possible alternative for single-use packaging such as bags and sandwich wrappers. Its key ingredients are fish scales and skin, so it can break down in home food waste or compost bins.Hughes created Marina Tex for her final-year project in the product design course at the University of Sussex. She had set out to若方程：+1=有增根，则=            ；