An important set of ideas have been advanced by the biologist Rupert Sheldrake.

　　生物學家魯珀特·謝爾德雷克已提出了一整套重要的觀點。

　　Susi Arnott is a biologist.

　　蘇茜·阿諾特是一位生物學家。

　　The biologist advanced a new theory of life.

　　這位生物學家提出了一個有關(guān)生命的新學說。

　　I have to go to the dentist tomorrow.

　　我明天得去看牙醫(yī)。

　　You should visit your dentist at least twice a year.

　　你應(yīng)該每年至少去看兩次牙科醫(yī)生。