名词
中文翻译：笔
同义词：
['pen', 'fountain pen', 'ballpoint pen例句：1. She dropped herpen on the floor and it broke.（她把笔掉在了地上，笔摔坏了。）']
例句：
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1. She dropped herpen on the floor and it broke.
她把笔掉在了地上，笔摔坏了。
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2. He dropped his pen in the waterand it floated away.
他把笔掉进水里，笔漂走了。
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3. The teacher askedus to drop our pens at thefront desk.
老师让我们把笔放在前排桌子上。