YouarewhatyoueatThis的精选

问题详情：Youarewhatyoueat.Thissayinghasprovidedscientistswithcluesaboutthedietofhominids(原始人类)—ourearlyrelativesof3millionyearsago.   Studyingcarbonatoms(碳原子)lockedupintoothenamel(珐琅质),tw...