cohabitation relation
同居关系
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Although the study focused on marriage and cohabitation and their relation to obesity, I also imagine that having children might play a role.
虽然研究重点关注婚姻和同居与肥胖之间的关系，但我认为生孩子可能也有关系。
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