·2,447,543篇论文数据,部分数据来源于NoteExpress
上海,死亡率高于出生率现象已经持续10之九,并且不足30%的独生子家庭打算要第二胎。
In Shanghai, the death rate has outstripped the birth rate for more than 10 years, and less than 30 percent of couples both from only-child families have had a second child.
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