Few people have quietly changed the world for the better more than this rural lad from the midwestern stateofIowa in the United States.
相比这个来自美国中西部爱荷华州、悄悄改变了世界的乡村男孩，几乎没人能做得更多更好。
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In the stateofIowa, Diane Ott Whealy wanted to protect historic plant varieties, like the seeds her great-grandfather brought to the U.S. from Germany more than a hundred years ago.