Now, researchers have presented the first randomized trialof what they hail as a side-effect-free, prescription-free and simply free appetite control agent.
最近,研究人员推出第一批随机试验品,他们称这为无副作用,非处方,仅仅影响食欲的控制剂。
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In late 2009, as G.E. experimented with its trial laser, supporters of arms control wrote Congress and the regulatory commission.