The National Bureau of statistics has not mentioned a precise birth rate figure, though it is possible to come up with a rough estimate using other statistics.

尽管可以通过其他统计信息得出一个粗略的估计，但是国家统计局并没有提到精确的出生率数据。

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It's better to determine some guidelines, start with a good rough estimate, and then go from there.

最好能够确定下某些准则，从一种较好的估计开始，然后逐渐找到那一个完美的组合。

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The purpose of the WAG generator is to provide the estimator with a rough and ready estimate that may be accurate enough to make decisions in the absence of time consuming analysis.

WAG生成器的目的是为估算者提供一个粗略可用的估算，这估算在缺乏耗时分析时也许足够精确以做出决策了。

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Gillian Mead, a professor of stroke and elderly care medicine at the University of Edinburgh, told the BBC that a rough estimate of the effect was that treating 20 patients with anti-depressants could prevent one of them becoming depending on care.

BBC: Anti-depressants 'may help stroke patients'