名词
中文翻译：Unknown
同义词：
['pen', 'pen', 'pen例句：1. She uses a pen to write down her thoughts.（她用笔写下自己的想法。）']
例句：
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1. She uses a pen to write down her thoughts.
她用笔写下自己的想法。
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2.The teacher asked the students to pen their homework on the blackboard.
老师要求学生们在黑板上写作业。
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3. He carefully penned his name in the notebook.
他小心翼翼地在笔记本上写下自己的名字。