While a successful marriage is not an exact science, science (and common sense) suggests thinking and behaving in a positive way toward one's partner is beneficial.

成功的婚姻并不是精密的科学，科学认为思想和行为积极些对于自己的伴侣是有好处的。

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"It's just not that exact a science," says Parrish, who knows more about hurricanes than most people do.

“这不完全是一门科学，”帕里什说，他比大多数人更了解飓风。

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A doctor's care is not a protective bubble, and cardiology is not the exact science that many people wish it to be.

医生的照顾，是不是一个泡沫的保护，和心脏病是不是精确的科学，很多人希望它。

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While determining a withdrawal rate is not an exact science, we thought it would be helpful to put some numbers to the scenario of a balanced portfolio to try to discern what a reasonable figure would be for investors to use as a starting point.

FORBES: What Portfolio Withdrawal Rate Can You Live With?

Economics is not such an exact science that a variety of opinions is unimportant.

FORBES: Removing Reserve Bank Presidents From FOMC: Another Bad Idea

It's not an exact science, but the industry figures suggest less than a third is left - which may be some distance short of peradventure.

BBC: Fact check: The boys from the black stuff