To keep your tummy flat you need to keep your back strong too as the band of muscle around your waist also helps support your spine.

想要保持腹部平坦，同时你也要保持背部强壮。

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Distinctive modelling design according to the design of principle of human body engineering arc shape, can perfect joint your waist, give your body good support.

独特的造型设计根据人体工程学原理设计弧线形状，能完美的贴合您的腰部，给予您的身体良好的支撑。

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The result of our study lends support to the suggestion from (prior) studies of a redefinition of overweight and obesity, for example by the waist-to-hip ratio.

先前有研究建议重新定义过高体重和肥胖，比如用腰围臀围比，而我们的研究结果支持这项建议。

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