The letters were written during a 26-year period when Crick informally guided the progress of molecular biologists around the world in establishing how DNA operates in living cells.

这些信件26年间写完，当时克里克非正式地指点世界分子生物学家建立DNA在活性细胞里的运行模式。

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'in effect, around 60 people would have to take the aspirin continuously for around 5 years to prevent one death from bowel cancer during a 20-year period,' he says.

实际上，在20年间约60人持续服用阿司匹林5年，才能预防一例因肠道癌死亡，他说，其明显的好处是能给需要决定是否服用阿司匹林的人提供不同的观点。

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In the same period last year, Japan killed 506 minke whales, well below its planned catch of around 850.

日本去年同期共捕杀506头小须鲸，远低于原计划的850头。

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Government data late February showed that India's gross domestic product grew 4.5% on-year in the October-December period and is expected to expand around 5% in the current fiscal year ending March 31.

WSJ: IMF: India Should Resolve 'Bottlenecks' in Power, Infrastructure for Growth

Just as the risk of dying is quite small in any year, the risk of a crash runs around 2 percent in any given 2-year period, the authors find.

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The industrial sector is essentially in a recession, with a second quarter contraction of 2.5 percent compared to the first, and around 1.5 percent compared to the same period a year ago.

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