The development and utilization of invalid patents, playing its important role should get people's enough attention.
开发利用失效专利，发挥其重要作用应得到人们足够的重视。
The invalid marriage plays an important role in the marriage system and is promulgated in the New Marriage Law of MainLand for the first time.
无效婚姻制度是结婚制度的重要组成部分，也是大陆新婚姻法首次规定的制度。
The invalid marriage plays an important role in the marriage system and is promulgated in the New Marriage Law of MainLand for the first time.
无效婚姻制度是结婚制度的重要组成部分，也是大陆新婚姻法首次规定的制度。
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