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overrun[ˌəuvəˈrʌn]overran[ˌəuvəˈræn]

vt. 蔓延,占领,侵害,蹂躏;超过(范围)  
overran, overrun, overrunning, overruns.    

拆分: over-在上,越过,覆盖 + run运转 

例:
Because the kitchen was dirty, it was overrun by insects. 由于厨房脏, 所以害虫在那里大量出没。 
The advertising department has overrun its budget three years in row. 广告部的开支已经连续三年超过预算。