We are now being alerted through research and case studies that many items we have bought and used in our homes over the years are not as safe as we may once have thought.

很多研究与事实告诉我们，这些年以来我们家里购买的以及正在使用的商品并不像我们想的那么安全可靠。

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The sun is thought to be about 5 billion years old and halfway through its lifetime as a "main sequence" star.

太阳现在的寿命大约是50亿年，作为一颗“主序”恒星，也只是过了生命的一半。

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Through the introduction to the application of ion chromatograph in the food additive examination in recent years, the new thought and the method for the correlation research are provided.

通过对近年来离子色谱在食品添加剂检测中的应用进行介绍，为相关研究提供新的思路和方法。

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Consolidation through the years had taken out most of Nasdaq's competitors, and Cummings thought the solution would be to build another national market center that Wall Street would view as a credible alternative.

FORBES: Intelligent Investing Briefing Book

Many in the audience might have thought Zhu had honed his language skills and extensive knowledge of finance through years of work abroad, possibly in the diplomatic service.

CNN: THE MAN WITH THE IRON FACE