中英文对照注释：
A clause in a contract that states that if a payment is missed， or some other default occurs （such as the debtor2 becoming insolvent3）， then the contract is fully4 due immediately. This is a typical clause in a loan contract； miss one payment and the agreement to pay at regular intervals5 is voided and the entire amount becomes due and payable6 immediately.
在合同尤其是在贷款合同中，常常有提前条约，譬如约定假如债权人破产，合同便立即到期，还有，在分期偿还贷款的合同中约定，一旦债务人不偿还一期债务，那样全部债款就立刻到期并要被偿还