Acceleration clause 提前条款（在某种情况下可要求提前偿还的条款）

中英文对照注解：

A clause in a contract that states that if a payment is missed， or some other default occurs （such as the debtor becoming insolvent）， then the contract is fully due immediately. This is a typical clause in a loan contract； miss one payment and the agreement to pay at regular intervals is voided and the entire amount becomes due and payable immediately.

在合同特别是在贷款合同中，常常有提前条款，比如约定如果债权人破产，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，那么全部债款就立刻到期并要被偿还