我们是一家专业的市场调查公司，排名全国前十。
We are a professional market research company, ranked the top 10 in China.
我不去上数学课，因为我知道得足够多了，并且上课前我已经学习过了，最后我在一个能力考试中排名全国前十。
I didn't go to math class, because I knew enough and had read ahead, and I placed within the top 10 people in the nation on an aptitude exam.
她指出前十年辐照牛肉在全国很多杂货店都有出售，但这并没有持续多长时间。
She pointed out that irradiated beef was offered at many grocery stores nationwide at the beginning of the decade but it did not last long.
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