in a way that is connected with the conditions of a legal written agreement, or that is agreed in a contract 合同的；契约的；按合同（或契约）规定的 The landowner is contractually obliged to maintain and conserve the land. 土地所有者有合约义务维护和保护土地。
Oxford Collocations DictionaryContractually is used with these adjectives:- bound
- obliged
- bind