| 词汇 | ballpoint pen | 
| 释义 | ballpoint pen  noun [ C ] uk/ˌbɔːl.pɔɪnt ˈpen/ us/ˌbɑːl.pɔɪnt ˈpen/ (also ballpoint)  圆珠笔 a pen with a small metal ball at the end that puts ink on the paper  The letter was written in blue ballpoint pen. 这封信是用蓝色圆珠笔写的。  | 
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