[原创]

渔夫入海

刚开始做外单，有几个英语词汇不太懂，请高手指教：
　　scope of warranty service
　　_____ on site parts and labour
　　----- carry-in maintenance (parts and labour included)
　　scope of maintenance service
　　不清楚 warranty service 跟maintenance service是什么区别
　　on site parts and labour？
　　
　　carry-in maintenance (parts and labour included)？是什么意思