perforate
/ˈpɜ:fəreɪt; `pəfəˌret/ v[Tn]
1 make a hole or holes through (sth) 在（某物）上穿孔或打眼
perforate the cover to let air in 在盖子上打眼让空气进入
[attrib 作定语]
a perforated ulcer 穿孔的溃疡.
2 make a row of small holes (esp in paper) so that it will tear easily 在（尤指纸）上打齿孔（以便撕开）
[attrib 作定语]
a perforated sheet of postage stamps 有齿孔的邮票联张.