Herewith we are sending you a written contract under seal in two copies.

兹寄上盖有印章的契约一式两份。

《新英汉大辞典》

He produced a written contract under seal.

他出示一张盖有印信的合约。

youdao

At the one extreme, the law may require the contract to be made under seal.

在一个极端，法律要求订立合同必须盖章。

youdao

At the one extreme, the law may require the contract to be made under seal.

在一个极端，法律要求订立合同必须盖章。

youdao