...Chemist Leo Baekeland化学家利奥·贝克兰 The chord struck by that line in The Graduate underscored how much had happened in the six decades since the summer of 1...
例句
例句
What Belgian chemistLeoBaekeland found ininstead was—get ready—polyoxybenzylmethylenglycolanhydride, the world's firstsynthetic plastic, commonly known as Bakelite.