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来源:雅诚德英语网
Differences in life expectancy between the richest and poorest countries are now greater than 40 years.
最富裕国家与最穷困国家之间预期寿命差异现已高达40多岁。
Differences in life expectancy between the richest and poorest countries are now greater than 40 years.
最富裕国家与最穷困国家之间预期寿命差异现已高达40多岁。