名词中文翻译
中文翻译：闭端针
同义词：
['closed-end thread', 'closed-end pin']
例句：
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1. The machine uses a closed-end needle to sew the fabric together.
这台机器使用闭端针将布料缝在一起。
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2. The needle is closed at one end and open at the other, allowing for easy insertion and removal.
针的一端是封闭的，另一端是开放的，便于插入和取出。
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3. The needle was so sharp that it could easily penetrate even the thickest material.
针非常锋利，能够轻易穿透最厚的材料。