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来源:雅诚德英语网
Like birthday party balloons, healthy blood vessels are flexible, widening and narrowing as needed throughout the day.
如同生日派对上的气球,健康的血管很柔韧,整天都会根据需要扩张或收缩。
Like birthday party balloons, healthy blood vessels are flexible, widening and narrowing as needed throughout the day.
如同生日派对上的气球,健康的血管很柔韧,整天都会根据需要扩张或收缩。