KotovBNC¹⁷³⁹⁹⁵⁺² 基本例句 科托夫¹⁰⁰ Made out of clay and a non-toxic glue similar to that used in school classroom, the composite plastic is biodegradable and requires very little energy to produce, lead researcher Nicholas Kotov said. 这种新型塑料的原料是粘土和类似于学生使用的无毒胶水，它可以被生物降解，而且只需很少的能源就能生产。 xcb.tjau.edu.cn