It doesn't have to take much time, just make it valuable.
你并不需要花费太多时间,但一定要使它更有价值。
Hydrogen, the lightest and simplest of the elements, has several properties that make it valuable for many industries.
氢作为最轻和最简单的无素,有几种特性对工业非常有用。
That is partlybecause the story of the elephant is not all it seems, and partly because thebest way to save a species is to make it valuable to people who may have otheruses for the land.
一方面,非洲象的案例绝非表面看起来那样,另一方面是因为保护物种的最佳手段是让生活在同一地区的居民能够从保育活动中受益。
it's in thinking critically and applying the ideas that you get from reading that... really make it valuable.
学习文学能锻炼我们的批判性思维,我们还能将文学中体现的思想应用到现实生活中。这才是文学的价值所在。
You want to give it to people in different communities, to make sure that it works in all the subpopulations where the vaccine's potentially valuable.
研究者希望将疫苗分接种于不同人群,以确保疫苗适用于所有人,这样才能体现疫苗的价值
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