"盖章"用英语怎么说?

Seal
A signet having a raised or incised emblem used to stamp an impression on a receptive substance such as wax or lead.

Stamp
An instrument for stamping a design or words.

Signet
A seal, especially one used officially to mark documents.

可以说：affix one's seal（图章）
还可以说：Stamp（在···上面盖章）

希望你满意~

stamp:盖章，

stamp on something: 在一个东西上盖章.

seal

stable

注册rejister行不？