kē / xué / jiā / zhèng / zài / yán / jiū / rú / hé / cóng / hǎi / yáng / fèi / qì / wù / zhōng / tí / qǔ / jiǎ / qiào / sù科学家正在研究如何从海洋废弃物中提取甲壳素。Scientists are studying how to extract chitin from marine waste.