动词短语
中文翻译：形成球形
同义词：
['form', 'become spherical']
例句：
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1. The ball was formed by the collision of two tennis balls.
这个球是通过两个网球碰撞形成的。
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2. The planet Mercury is known for its spherical shape.
水星以其球形而闻名。
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3. The spacecraft landed on a spherical object.
宇宙飞船降落在一个球形物体上。