bind someone to something
phrasal verb with bind verb uk/baɪnd/ us/baɪnd/ bound | bound
使…保证；迫使…遵守约定
to force someone to keep a promise
His sister had been bound to secrecy. 他妹妹被迫承诺保守秘密。
We are bound to the original contract. 我们都得遵守原始合同。