这大约需要花费两年的时间。
She was about two years older, more active and braver.
她比我大两岁,更活泼也更勇敢。
It was on Arts and Entertainment about two years ago.
这是大约两年前的《艺术与娱乐》频道上的。
Co-founder Neeru Khosla says the nonprofit group had been developing digital science and math books for about two years.
VOA: special.2009.08.27
I think this is taken about two years after they discovered the fourth quantum number.
这张照片拍摄于他们发现,第四个量子数的两年后。
And in about two years into the, my undergraduate process,
但在本科学习的两年中
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