白求恩在中国工作了大约两年。
并且我确实花费了大约两年的时间尝试着去寻找切入问题的方式。
And I really spent about two years trying to find different ways into it.
文件说的很清楚，我父亲已经与这位素不相识的人结婚大约两年了。
The words spelled it out clearly. My father had been married for almost two years to a person he had never met.
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