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近年来海洋生物学家、环境保护人士和国际海事组织(IMO)对海洋和近岸水域所面临的危险发出了警告:由压舱水的运卸而可能带来的外来水域中有害入侵
In recent years marine biologists, environmentalists and the International Maritime Organization (IMO) have warned of the dangers of marine and inshore waters: the harmful invasion of alien waters that may result from the operation of ballast water