The average couple who failed to conceive said their GP only acknowledged their fertility problem after 17 months of trying for a baby.

普通不孕夫妇表示，他们是在试图怀孕17个月后才发现存在生育问题。

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Your doctor will perform several tests to help figure out the problem. Your partner also should have tests because he could have a fertility problem.

医生会做一些检查以帮助指出问题。因为你的伴侣可能有生育问题，也应该做些检查。

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According to Kramer, Haiti's problem isn't lack of soil fertility, but lack of soil itself. "Deforestation erodes whole layers of soil into the ocean every year."

克雷默表示，海地目前的问题不是缺少肥沃的土地，而是缺少土地，“每年，滥伐森林都把土地的整个土层都冲刷到了海里。”

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But the rock-bottom fertility rates in the tigers give the problem particular potency.

ECONOMIST: Banyan

Panos Zavos , the Kentucky fertility doctor and would-be human cloner, apparently doesn't see Lucas' clone army as a problem.

FORBES: Scientists Fret Over 'Clones'

Falling fertility has taken much of the urgency out of the debate about population growth, at least among experts, since it seems to be solving the problem of excessive births (a view criticised by Mr May, who points out that even if fertility has declined, the momentum of change means populations will go on rising for a while).

ECONOMIST: The digressions of people power