These numerous examples of cross-reactions raise another question: why does Bet v 1 cause an allergy to the Mal d 1 protein but not the other way around?

这么多交叉反应的例子提出了另一个问题：为什么Bet v 1会导致对Mal d 1蛋白质的过敏，反过来Mal d 1却不会导致Bet v 1过敏？

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The digital output controls the line by using a transistor to leave the line at 0 V or to raise the line to +V.

Sourcing数字输出通过三极管控制连接线上的高低电平。

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The word of string course V tiny low waist designs to raise high feeling.

腰线V字微低腰设计，以增加修长感。

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But in the last twenty years, H.I.V.and the collapse of the Soviet Union helped raise death rates in thirty-seven countries worldwide.

VOA: special.2010.05.05

John Silvia is the senior economist at Wells Fargo Bank: "Private payroll gains continue to be modest and I would say it does raise flags for those super optimists who were looking for a V-shaped recovery and thinking that we are going to go back to normal very quickly in the US.economy."

VOA: standard.2010.07.02

And there was -- Turkey raised issues on -- related to capabilities, did not raise the issue of Syria or Article IV or Article V.

WHITEHOUSE: Press Briefing on NATO Defense Capabilities