The rise in cases underlines the urgent need to conduct high-quality immunization campaigns to rapidly boost population immunity levels.

病例的增加强调了迫切需要开展高质量的免疫运动以便迅速增强人群免疫水平。

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Whereas in Paris carriers splurged on single-aisle planes, the rise of long-haul budget carriers could boost sales of wide-bodied craft in the next few years.

当各航空公司在巴黎一掷千金地购买单过道飞机时，长途廉价航空公司的兴起会在接下来几年里刺激宽体客机的销量。

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Irregular sleep patterns boost adrenaline levels, causing blood pressure to rise - which is a big risk factor for heart attacks.

不规律的睡眠会增加肾上腺素的分泌，导致血压升高——这是心脏病的一大诱因。

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In theory a rise in farm output should boost nutrition by more than a comparable rise in general economic well-being, measured by GDP.

ECONOMIST: How much can farming really improve people��s health?

Like-for-like sales were up 1.9% last month from a year earlier, down from February's 2.7% rise, despite the boost from an early Easter.

BBC: UK retail sales in March hit by cold weather

Mr Callow said that while a weak yen would help boost profits of exporters, the rise in energy costs "would offset some of those gains".

BBC: Yen breaches 100 threshold mark against US dollar