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1·Literary fiction has no hard-and-fast definition.

“文学”小说没有固定的定义。

2·Obviously, use judgement rather than hard-and-fast rules for what looks neatest, but value clarity in appearance.

很明显，使用判断力而不是死板教条的规则确定什么是看上去最整齐的，但也要重视外观的清晰。

3·But that is not a hard-and-fast rule, Reynolds said, and an ownership stake below 10 percent is not automatically shielded from review.

雷诺说，但这也不是不可违背的惯例。拥有10%一下的股份不会自动躲过调查。

4·Keep in mind that not all recommendations are appropriate for all situations, and that they are offered as guidelines, not hard-and-fast rules.

务必记住，并非所有的建议都适合于所有情形，并且这些建议是作为指导原则而不是作为硬性规则来提供的。

5·Multiplayer online games accessed through a game console have hard-and-fast performance rules that derive from the fixed refresh rate of the display device.

通过游戏机访问的多玩家在线游戏具有严格且快速的性能规则，这是因为显示设备具有固定的刷新速率。

6·This may be an area of life where most people can recognise evil when they see the details of one horrifying case-but were it will always be hard to make hard-and-fast rules that suit every country.

人们只消见到某真实事件，了解其中的骇人真相都不难认识到人口贩卖的邪恶，但是想要制定出适合所有国家的一定之规却实在难上加难。

7·There are no hard and fast rules about this.

这事没有什么硬性的规定。《牛津词典》

8·You can't lay down hard and fast rules.

规则不能定得太死。《牛津词典》

9·There are no hard and fast rules for planning healthy meals.

在安排健康饮食方面，没有什么一定之规。《牛津词典》

10·There are no hard and fast rules, but rather traditional guidelines as to who pays for what.

关于谁来支付什么费用并没有一定要遵守的规定，只有传统的准则。《柯林斯英汉双解大词典》