holdren

例句:

• You are listening to physicist John Holdren, and technology advisor to U.S. President Barack Obama.
  现在您正在收听的是物理学家约翰霍尔德伦的讲话, 他还是美国总统奥巴马的科技顾问.
  
• Obviously Holdren's book is still in circulation.
  来自SA
• White House science adviser John Holdren gingerly supported geoengineering research in the past.
  来自SA
• That sense of national pride was picked up by US President Barack Obama's chief science adviser, John Holdren.
  来自BBC