1 . 进化生物学家
He worked as an evolutionary biologist at Harvard University in Cambridge , Massachusetts ., 他是马萨诸塞州剑桥镇的哈佛大学的进化生物学家.
1 . 生物学家和
Physicists , geologists , biologists and chemists , by and large , know the difference between theory and truth ., 物理学家 , 地质学家 , 生物学家和化学家 , 总体上来说 , 明白理论和真相的区别.