etcher's needle

例句：

1. 1. The artist used a etcher's needle to create the intricate details on the painting.
   艺术家使用刻针在画上创作出复杂的细节。
2. 2.The scientist needed a etcher's needle to measure the thickness of the sample.
   科学家需要用刻针测量样本的厚度。
3. 3.The writer used a etcher's needle to trace the outline of the character in her story.
   作家用刻针在故事中勾勒出角色的轮廓。