Once that person quits — and gets over the initial period of withdrawal — he will have 20 fewer periods of stress each day, Hajek said.

一旦那个人戒烟——克服了最初的阶段——每天他将会经历少于20个阶段的压力冲击。

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"Many smokers worry that if they stop smoking, they will lose a valuable tool for coping with difficult situations and stresses in their lives," Hajek noted.

哈爵克指出：许多吸烟者担心如果他们停止吸烟，他们可能会失去一个有价值的应对困难情况和生活压力的工具。

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"When dependent smokers cannot smoke, as the period without cigarettes lengthens they tend to feel more and more edgy, irritable and uncomfortable," Hajek explained.

哈爵克说：当依赖香烟的人不能够抽烟的时候，因为没有烟抽的时间延长了，他们往往就会愈发急躁，易怒和不安。

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Murray's path through the draw could potentially take in Hajek, Gilles Simon, Sam Querrey, Fernando Verdasco, Nadal and Federer.

BBC: Andy Murray to play Czech Jan Hajek in Wimbledon opener

Hajek does have some form, however, after winning a Challenger event on clay in his home country last month.

BBC: Andy Murray to play Czech Jan Hajek in Wimbledon opener

Russian second seed Mikhail Youzhny defeated German Andreas Beck 6-3 6-3 to reach the third round, where he faces Jan Hajek of the Czech Republic.

CNN: Federer registers first clay win of 2010