A contract may contain both express and implied terms.

一个合同可能包含有明示或默示条款.

The implied terms is relative to the express terms and also the complement to the implied terms.

默示条款是相对明示条款而言的，也是明示条款的补充和完善。

There also exist the implied terms in common law, with the legal nature is similar to the collateral obligation.

英美法系中也有类似于附随义务的默示条款存在。

Try to figure out the possible express and implied terms of the agreement with reference to their importance and impact if these terms are broken.

试着找出可能的表达和默示条款并参照其如果违反了这些条款的重要性和影响。