seal by special wedge-like gasket

例句：

1. 1. The seal on the package is broken.
   包装上的封条被撕开了。
2. 2. He sealed the letter with a kiss.
   他用吻封住了这封信。
3. 3. The seal of the emperor's edict was stamped on the document.
   皇帝的诏书上盖有印章。