用“signed and sealed”造句大全，signed and sealed造句

This Contract can only be altered, amended or supplemented in accordance with documents signed and sealed by authorized representatives of both parties.

The treaty was signed and sealed by both governments.

They signed and sealed the treaty.

This agreement is signed and sealed by the authorized representatives of the two parties.

This agreement will take effect immediately after being signed and sealed by the legal representatives or authorized representatives from both parties in writing.