What can be done about invasive alien species?
怎样处理外来入侵的有害物种？
Risk assessment is one of the most effective measures to prevent invasion of alien species.
外来物种风险评估是防止外来物种入侵的最有效手段之一。
Recently this alien invasive species has been introduced in China and threatened the agricultural production.
近年来该害虫传入我国，对农业生产构成严峻威胁。
Recently this alien invasive species has been introduced in China and threatened the agricultural production.
近年来该害虫传入我国，对农业生产构成严峻威胁。
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