名词
中文翻译：小球
同义词：
['ball', 'sphere', 'spherical例句：1. The child was playing with a pilula on the grass.（孩子在草地上玩着一个球。）']
例句：
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1. The child was playing with a pilula on the grass.
孩子在草地上玩着一个球。
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2.The scientist discovered a new type of pilula in the lab.
科学家在实验室里发现了一种新的球体。
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3. The pilula is round and smooth, just like a ball.
这个球体是圆的，光滑的，就像球一样。