The drug giant merck suspends trials on an hiv vaccine that was regarded as one of the most promising 药物巨人默克药厂在一个被视为最有希望之一了的爱滋病毒疫苗上中止试验。
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The pharmaceutical company merck halted test vaccinations on a much - heralded h . i . v . vaccine after it failed to prevent or reduce the severity of infection 被停止测试接种的制药公司默克药厂在一之上很多预报它后的h . i . v .疫苗没有避免或者减少感染的严重。
