Many of them have been protected as parks or non-residential development, such as ball fields, and so they stand out as green circles of vegetation against the surrounding gray and white cityscape.

许多火山被保护起来成为公园，有些则作为不开发的非居住区，例如作为球场，因此这些被植被覆盖的绿色圆形高地与周围灰白色的城市景象形成鲜明对比。

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Color Doppler combining with 3d ultrasound imaging technique could display the stereoscopic configuration of "holding ball", "hand-basket", "surrounding blood vessel bypass".

彩色多普勒与三维超声成像技术的结合更易于显示肿瘤血管“抱球征”、“提篮征”、“周围血管绕行征”的立体构型。

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That is the word of the day for many surrounding the ball drop controversy involving Tiger Woods at The Masters.

FORBES: Tiger Woods Escaping Disqualification means CBS, IBM Escape Ratings Downfall

Argentina hooker Ledesma looked as though he had not managed to get the ball down under pressure from Mark van Gisbergen as he burrowed over in the corner with four tacklers surrounding him.

BBC: Clermont Auvergne 37-27 Wasps