He says he has worn it for two days and figures it must be working because he has not come down with the flu.
VOA: standard.2009.04.30
It was undertaken with two primary figures at its head for many, many years.
这项研究是由两大人物牵头,进行了很多很多年
And he gets it right to two significant figures.
他得出了2个重要的数字。
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