needle hole

基本解释

The appearance after operation was satisfied, without the formation of needle hole and scar.
伤口愈合美观，无缝线针眼瘢痕。
The problems and the solution of blast furnace tuyere in the casting are introduced. Measurements on lowering gasser and needle hole is analysed.
介绍了高炉风口在铸造中遇到的问题和解决方法，讨论了降低气孔、针孔的工艺措施。
Two days later, Zheng Cainiang could not help but reveal the secret to her mother who went to see the gold needle out of curiosity, only to find nothing but the paper with the needle hole in it.
两天后，她忍不住把这事说给母亲听，母亲去看金针，却没了踪影，只留下有着针迹的一张纸。
blog.sina.com.cn

Self-assembly was very useful in eye-of-the-needle problems—in cases where you had to get something very large through a very small hole—and Leuthardt wondered if it might be helpful in minimally invasive surgery.
NEWYORKER: In the Air