Meanwhile a young man came down the road. Vigorous and healthy, he was singing a song and looking this way and that.

这时来了位年轻人，朝气蓬勃，一路高歌，并且在举目四顾。

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You can therefore help keep these regions thick and healthy through vigorous exercise and bouts of strenuous mental effort.

因此你可以通过剧烈运动和大力用脑来帮助这些区域维持其厚度。

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The product is rich in fruit granule scrub, which could remove the aged cells effectively, smooth the skin texture and improve the skin tone, leaving healthy and vigorous.

该产品是在水果颗粒磨砂，可有效地去除老化细胞，平滑的皮肤纹理，改善肤色，使丰富的健康和活力。

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This case study has touched off vigorous discussions, with both agreements and disagreements about key questions -- a healthy and important part of the scientific process.

WHITEHOUSE: Prevention and Treatment of HIV Infection in Infants Born to Infected Mothers: Need for a Fresh Look | The White House

According to the Physical Activity Guidelines for Americans, children and adolescents need at least 60 minutes of moderate to vigorous physical activity each day to stay healthy.

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