parol evidence的用法和样例：
例句
- The parol evidence rule applies to evidence as to what the express terms of a contract are.
口头证据规则适用于确定合同的明示条款的证据。 - Another constitutional change aims to improve a hidebound judicial system, introducing oral evidence and moving towards adversarial trials.
另一项宪法改革旨在改进迂腐保守的司法系统，并将口头证据和抗辩制庭审系统引入法庭。
