Research suggests only one in four knows the harm cigarettes or second-hand smoke can cause.

研究表明，四个人里面只有一个知道香烟和二手烟可能造成的伤害。

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Counsellors were on hand, as well as four replacement jurors ready to step in if the evidence proved too hard to stomach.

律师还有四个后备陪审团成员就在边上，准备着如果证据太难以接受时进行替换。

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I have visited each of the four remaining polio-endemic countries, in Asia and Africa, to observe first-hand the tremendous efforts being undertaken, often under very challenging conditions.

我访问了亚洲和非洲仍然流行脊髓灰质炎的四个国家，以亲眼观察正在作出的巨大努力，而这些努力往往是在极其困难的条件下作出的。

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The four-in-hand, the forerunner of the tie, appeared in Britain in about 1860 (like the suit) and was the social-networking tool of its day.

ECONOMIST: Men's clothing

Strauss was particularly pleased with his side's reaction to a missed opportunity in the 38th over when the West Indies, with four wickets in hand, appeared on course for their target.

BBC: Cricket World Cup: Strauss hails England performance

The Rockets, on the other hand, nailed four threes in the period, outscoring New York by nine to take a huge 83-60 lead they never really came close to surrendering.

WSJ: Lin Helps Rockets Knock Off Knicks