seal by direct contact of conical faces

例句：

1. 1. The seal on the envelope is broken.
   信封上的封条被撕开了。
2. 2. Hesealed the letter with a kiss.
   他用一个吻密封了这封信。
3. 3. The seal of thegovernment was removed from the building.
   政府大楼的封印被移除了。