这种想法建立在研究和得克萨斯及夏威夷等州试行的基础上，说明人们改变了对于迅速和确切而不是必要的严重后果做出反应的行为。
The idea, based on research and recent experience in states such as Texas and Hawaii, is that people change behaviour in response to swift and certain consequences, not necessarily severe ones.
如紫色花的亚洲牡丹和草莓番石榴等外来物种，威胁着如无刺玫瑰和树蕨等脆弱的夏威夷本土物种。
Invaders such as purple-flowered Asian melastome and strawberry guava threaten delicate Hawaiian natives such as thornless roses and tree ferns.
对温暖气候的偏好意味着大多数的巨蟒只能生存在佛罗里达、南得克萨斯、夏威夷或类似关岛和波多黎等热带岛屿。
A preference for warm weather means most of the snakes could only survive in Florida, southern Texas, Hawaii or tropical islands like Guam and Puerto Rico.
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