单词	维护更新
释义	维护更新maintenance renewal
随便看	recurrence recurrence code recurrence distance recurrence equations recurrence formula recurrence formula--recursive formula -- recursion formula recurrence frequence recurrence frequency recurrence game recurrence horizon recurrence interval recurrence method recurrence (of disease) recurrence pattern recurrence probability recurrence rate recurrence--rate recurrence, recurrency recurrence relation recurrence relation--recursive relation recurrence risk recurrences recurrence state recurrence system recurrence time