The study tested a two-vaccine combination in a "prime-boost" approach, where the first one primes the immune system to attack the HIV virus, and the second one strengthens the response.

这项研究测试了两种疫苗的组合注射，采用“启动—提高”的办法，其中第一种疫苗启动免疫系统攻击艾滋病毒，而第二种疫苗则强化这一反应。

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This method, known as "prime-boost", has been tested on more than 16,000 volunteers in Thailand.

这个方法即所谓的“刺激增强”，已在泰国的16000多名志愿者身上试验过。

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The presence of the prime minister was intended as a morale boost.

首相的到场本来是要激励士气的。

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To get at these non-mutating parts of the virus, Nabel and his colleagues used a two-step vaccination process, called "prime-boost."

VOA: standard.2010.07.21

Mr Kerry, on an unannounced trip to Iraq, held talks with Prime Minister Nouri Maliki in a bid to boost co-operation over the Syria conflict.

BBC: Kerry presses Iraq on Iran weapons flights to Syria

Russian Prime Minister Vladimir Putin called on Wednesday for sweeping tax reforms to boost investment-led growth, while pledging to keep the rouble stable without imposing any capital controls.

FORBES: Putin Pledges Pro-Growth Tax Cuts: Or, Why Today's Russia is Far More Flexible Than the Soviet Union

But Mr Byers - who is also secretary of state for the regions - received a boost in the form of the backing of Deputy Prime Minister John Prescott who predicted his colleague would play a major part in the next stage of the government's plans for devolution into the English regions.

BBC: Sixsmith: Byers 'tore up' agreement