is undergoing routine maintenance的中文翻譯是正在進行例行維護
重點詞匯：routine
詞語分析：
音標：英 [ruti?n] 美 [ruti?n]
n. 例行公事；日常工作；程序
adj. 日常的；例行的
短語：
daily routine 日常生活；日常工作
service routine 服務程序
例句：
The artists were going through their daily routines.
藝術家們正進行日常的練習活動。
I settled down into a routine of work and sleep.
我安定下來，整天就是例行的工作和睡覺。
Mike had got the breakfast routine down to a fine art.
邁克把例行的早餐做得細致講究。
近義詞：
n. 例行公事；日常工作；程序? procedure，program