成灾: cause disaster 短语和例子鼠害成灾 be infested with rats; 会议成灾duluge of meetings;暴雨成灾。the heavy rainstorm caused a disastrous flood
虫害: [农业] pestis; damage by insects; insect attack [damage]; insect pest 短语和例子虫害成灾 be infested with insects; 虫害测报 forecast of pest-outbreak; 虫害防治 pest control
