摘要英文--
Canada a chysanthemum original accomplishment watches and enjoy the plant of nature and is imported. As it itself indomitable lifeforce has lack restriction of matural enemy and special characteristic of special creature quickly and breed with the lacal plant strive for nurtient and land and be in the superiority chain of ecological environmental creature circulates and appear the breakpoint ignite the a series of bad consepuence
关键词--
加拿大一枝黄花|危害|治理
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