Tungsten light bulbs cast very yellow light. And any surface that light bounces off can add its color.

钨丝灯光明显偏黄，而且反射这种光线的表面也会呈现出相应的颜色。

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Doctors at the Rizzoli hospital stressed that they also took great care not to ruin the face of the donor, substituting the removed bone with a wax mould, and avoiding making any surface cuts to the deceased's face.

BBC: Doctors perform jaw transplant

The reason: All four of the top American hopes possess serves and groundstrokes which are strong enough to be weapons on any surface, and the slow, high bounce on clay brings the ball into their hitting zone with sufficient time for them to set up their shots.

WSJ: Americans Produce Feats on Clay

Health, family or financial issues are all part of life and may surface at any time.

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