He spoke about the importance and the promise of America's new position in the world.

VOA: special.2010.07.29

It's easy to know what nucleotide to put in each position as you're going along and polymerizing a new molecule.

这使得复制过程中决定下一个核苷酸位点,应该用哪一个核苷酸更为容易

耶鲁公开课 - 生物医学工程探索课程节选

Mister Franklin accepted a teaching position at Brooklyn College in New York.

VOA: special.2009.12.27

He says there is nothing new in the American position and that he expects a pretty calm reaction from Russia as long as the United States does not turn words into action.

VOA: standard.2010.07.05