以上来源于: WordNet
The product of 21 and 16 is 336.
21和16的乘积是336。
14, 21 and 28 are all multiples of 7.
14、21和28都是7的倍数。
I'm a teacher with 21 years' experience.
我是一个有21年经验的教师。
Richard J. Daley led Chicago - ruled might be a better word - for 21 years.
VOA: special.2009.01.12
But the question is how are those of us of this generation, living that ethic out in the early 21st century?
但问题是,我们这代人如何,将在21世纪初的生活中体现这一道德?
Well, I've lived here for 21 years. So this is like really my area.
我在这里生活了21年了。所以这里真的可以称作我的地盘了。
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