试想如此庞大的中医药体系，如此详尽的中医药实践真知，单靠积累也不是一般人毅志所能坚持的。

Just imagine such a huge system of Chinese medicine, such a detailed Zhen Zhi in Chinese medicine practice, the accumulation is not alone ordinary people can adhere to the Chi-yi.

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他们可以四人一组参加乐施毅行活动。

They can form groups of four to join Oxfam Trailwalker.

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至于两人晚上怎么睡觉的问题，郭毅说他坚持“绿色租赁”的原则，即两人分房睡。

As to the question as to how the couple sleep at night, Guo said he sticks to the principle of "green rent", which means sleeping in different rooms.

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