Seller and/or its designated service provider shall offer to Buyer the opportunity to enter into an extended maintenance contract with respect to the System,renewable for successive and consecutive ___ year periods.是什么意思_Seller and/or its designated service provider shall offer to Buyer the opportunity to enter into an extended maintenance contract with respect to the System,renewable for successive and consecutive ___ year periods.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句