,1944)试验:用生物化学方法证明这种活性物质是DNA。 噬菌体的侵染与繁殖: 3235赫尔歇(Hershey A.)等用同位素P和S验证DNA是遗传物质。原理:P存在于DNA, 而不存于蛋白质;S存在于蛋白质,不存于DNA。
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The most obvious bidders are Hershey and Nestle, which could combine forces to make a counter bid for Cadbury or bid separately.
最明显的竞购者是好时食品(Hershey)和雀巢公司(Nestle),它们可以联合起来竞购吉百利,或是单独收购。
He bought a Hershey Bar and a bottle of Coca-Cola.
他买了一块“好时”巧克力和一瓶可口可乐。
"He was a different kid, more active and happy all the time," said Dr. Hershey.
“他是一个与众不同的孩子,从头至尾都比别人更加积极和乐观,”赫尔希医生说。
Nina struggles to perform the leading role in "Swan Lake" while dealing with a controlling mother, played by Barbara Hershey.
VOA: special.2011.02.21
A competitor of Mars,Hershey's, supported the gene mapping of the Criollo, a far less common cacao tree.
VOA: special.2010.10.19
In this way,he prevented Hershey,Pennsylvania from becoming a factory town in which the workers were forced to pay their employers for a place to live.
VOA: special.2010.12.05
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