perforation
🇺🇸
/ˌpɜːrfəˈreɪʃn/
🇬🇧
/ˌpɜːfəˈreɪʃn/
noun
R
A tiny hole made in something, often part of a pattern of holes.
The new stamps had neat perforations along the edges for easy separation.
新邮票边缘有整齐的孔洞，便于分开。
R
When something is torn or split, leaving a hole.
The perforation of the eardrum can be caused by a sudden, loud noise.
鼓膜的穿孔可能是由突然的响声引起的。
translation
穿孔
词形变化
Plural
perforations