Moral courage is a rarer commodity than bravery in battle or great intelligence.

Thanks to rising agricultural productivity, lean years are rarer all over the globe.

由于农业增产，全球的不景气日子更加罕见了。

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The rarer and more valuable those services are, the better off you'll be.

你的服务越稀有越有价值，你赚的就会越多。

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With the increase of mobile users, the wireless resource available becomes rarer and rarer.

随着移动用户的大量增加，空中资源日趋紧张。

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His prediction, therefore, was that better emotional memory would be associated with the rarer version.

他因此推测情绪记忆更牢固和较少见的变体有关。

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That sort of team poaching is common in investment banking but rarer in academic research.

这种挖走人家整个团队的做法在投资银行界司空见惯，但是在学术研究界却不多见。

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It is rarer for coaches to live apart from their family.

但是教练和他们的家人分居就少见了。

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But it only offered low protection against one rarer strain, which the authors say needs more investigation.

但是它对一种更罕见的毒株的防御作用较低。科学家说对这种毒株需要更多的研究。

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Attacks are rare; deaths are rarer ( six worldwide last year).

鲨鱼袭击很少见，而被鲨鱼吃掉更是少之又少（去年共有6起）。

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In a much rarer case, your application could need to be able to receive secure email.

在很少的情形中，您的应用程序可能需要能够接收安全电子邮件。

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That seems to be an even rarer talent and accomplishment.

而这似乎才是更难得的才能和成就。

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Direct evidence on wage levels is rarer still.

显示薪资水平的直接证据就更少见了。

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An Empirical Study of compounding the problem of criminal cases in rural areas is rarer.

另外，从实证角度研究农村刑事案件的私了的文章也非常少见。

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Pay is higher, working hours are shorter and industrial accidents rarer.

工资更高，工作时间更短，工伤事故也更少。

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New species of snakes, however, are much rarer."

然而新种类的蛇则要稀有的多。”

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A good wife is rarer than a good job!

一个好妻子比一份好工作更难得！

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Rarer than the sun that cracks the cheeks Of the gaunt sky perhaps once in a week.

很少见，还不如太阳穿透当地阴沉天空的次数，一星期太阳或许还能露出一次笑脸。

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Taxis on a rainy New York night are rarer than sunshine ．

纽约雨夜的出租车非常少。

高考真题- 2016 全国3卷 阅读B

While they could once buy second-hand textbooks, or share copies with friends, the digital systems are essentially impossible to avoid.

曾经他们可以购买二手课本，或者和朋友共享复印本，但数字系统根本无法避免。

四级真题- 2018年 6月 1卷 信息匹配

She rented her economics and statistics textbooks for about$ 20 each.

她租的经济学课本和统计学课本各花了约20美元。

四级真题- 2018年 6月 1卷 信息匹配

Its digital course materials save students up to 60% compared to traditional printed textbooks, the company added.

相比传统的印刷教材，其数字课程材料能为学生节省60%的开销，该公司补充道。

四级真题- 2018年 6月 1卷 信息匹配