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对来自动植物疫区的船舶实施检疫以来,截止1994年底,我局已在进境船舶上检出4种危险性害虫,共10艘次。一般性生活害虫的检出率则高达25％左右。如何
Since the implementation of quarantine inspection on ships from animal and plant epidemic areas, as of the end of 1994, our bureau has detected 4 dangerous pests on ships entering China for 10 times. The general detection rate of pests is as high as 25%. how is it