extended warranty的用法和樣例：
例句
- The quality guarantee period is divided into the normal guarantee period and the extended guarantee period for the principle components.
質量保證期分為正常質量保證期和主要部件的延長質量保證期。 - The warranty period shall be 12 months counting from the date on which the buyer, the end-user and the seller sign the Certificate of Final Acceptance of the Contract Goods.
保證期自買方，最終用戶和賣方簽署合同貨物最終驗收證書之日起十二個月。
