针笔是一种制图工具，建筑师、工程师或制图员常用它来绘制建筑、工程或技术图中固定宽度的线条。针笔使用可填充的墨水管或抽换式的墨水卡匣。
... 针笔 technical fountain pen 工程说明图 technical illustration 针笔 technical pen ...
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其中一种就是它让人们可以用手指或触针笔在屏幕上写下汉字。
One approach is to allow users to draw Chinese characters with a finger or a stylus.
当妈妈“写作”的时候，她用针作笔，绣出许多美丽的花朵。
When mom is "writing", she USES the needle as her pen, embroiders many beautiful flowers.
当妈妈“写作”的时候，她用针作笔，绣出许多美丽的花朵。
Then both of us have a "writing desk".when mom is "writing", she USES the needle as her pen, embroiders many beautiful flowers.
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