The covenantee cannot have both the promised performance and some other performance which he agrees to accept.

受约人不能既有承诺的表演，也不能有他同意接受的其他表演。

youdao

The covenantee cannot have both the promised performance and some other performance which he agrees to accept.

受约人不能既有承诺的表演，也不能有他同意接受的其他表演。

youdao