名词
中文翻译：钢笔
同义词：
['pen', 'nib', 'tip']
例句：
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1.He carefully sharpened his pen to make it write smoothly.
他小心地磨尖了笔，让它能流畅地写字。
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2.The writer's pen was stained with ink from the previous page.
作家的笔被前一页的墨水染黑了。
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3.The artist used a finer nib for his drawings, making them more detailed.
这位艺术家为了他的画作使用了更细的笔尖，使作品更加精细。