雙語例句：
Scientists continue to push back the boundaries of human knowledge.
科學家不斷擴大人類知識的范圍。
He is a writer first and a scientist second.
他首先是作家，然后才是科學家。
Scientists have established a connection between cholesterol levels and heart disease.
科學家已證實膽固醇含量與心臟病之間有關聯。
Scientists have a fairly negative attitude to the theory.
科學家對這個理論的態度是相當消極的。
Scientists are on the brink of making a major new discovery.
科學家很快就會有新的重大發現。