乍一看，女孩周围天蓝色水的背景以及孩子脸上飞溅的水花，让她看上去是在水中游泳。
At first glance, the bright blue background of the water and the splashes around the child's face makes it look like she is swimming underwater.
它是一个多样性环境，靠近表面的水趋近蓝色，往下深处是淡红色。
It's a diverse environment with water tending to be bluish near the surface and reddish deeper down.
它是蓝色的，因为水几乎覆盖了地球表面的四分之三。
It's blue because water covers almost three quarters of the Earth's surface.
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