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来源:雅诚德英语网
The rate of preterm births (babies delivered after less than 37 weeks of pregnancy) decreased 1 percent, to 12.7 percent in 2007.
2007年,早产儿的比率(怀孕37周以内)降低了一个百分点,为12.7%。
The rate of preterm births (babies delivered after less than 37 weeks of pregnancy) decreased 1 percent, to 12.7 percent in 2007.
2007年,早产儿的比率(怀孕37周以内)降低了一个百分点,为12.7%。