Let baby play on different floor surfaces (carpet, rugs, hardwood, tile, etc.).

让宝宝在不同质地平台上玩(地毯、小毛毯、木地板、瓷砖地板等等。)

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Fluid shear is the mechanical force exerted by the movement of fluids over cell surfaces and has been found to play an important role in cellular differentiation, development and function.

流体剪切力是由于液体流经细胞表面所产生的一种机械力，目前发现其在细胞分化、发育及行使细胞功能的过程中起到了巨大的作用。

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"Children are especially susceptible to third-hand smoke exposure because they breathe near, crawl and play on, touch and mouth contaminated surfaces," according to the study.

“儿童特别容易接触到三手烟，因为他们呼吸更接近污染表面、并在上面常爬行和玩耍，同时触摸和用嘴都去接近受污染的表面，”按照这项研究。

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Twelve months ago, the conditions on the exposed Shinnecock Hills layout on New York's Long Island, allied to the USGA's decision to roll some greens before play, produced surfaces so slick that putts rolled off them and perfect tee shots were unable to hold.

BBC: Pinehurst's No.2 course also hosted the US Open in 1999

Lets go and play football when the surfaces are great, the training facilities are good and the spectators can come along to a game in a t-shirt.

BBC: Scottish Premier League clubs favour expansion plans

The effect is preternatural--bringing an immediacy to the past that is paradoxically fresher than the present--and is accomplished with careful attention to the texture of materials and the play of light on surfaces, modulated with projected shadow.

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