[ 复数 ballpoints ]
同义词： ballpoint pen ballpen Biro
以上来源于: WordNet
N-COUNT A ballpoint or a ballpoint pen is a pen with a very small metal ball at the end which transfers the ink from the pen onto a surface. 圆珠笔
ballpoint pen n. 原子笔，圆珠笔
The boys were bickering over some ballpoints.
那些男孩子为几支圆珠笔争吵起来了。
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