1 . 進化生物學家
He worked as an evolutionary biologist at Harvard University in Cambridge , Massachusetts ., 他是馬薩諸塞州劍橋鎮的哈佛大學的進化生物學家.
1 . 生物學家和
Physicists , geologists , biologists and chemists , by and large , know the difference between theory and truth ., 物理學家 , 地質學家 , 生物學家和化學家 , 總體上來說 , 明白理論和真相的區別.