文章详细信息 关键词: 候鸟;;随机干扰;;饱和发生率;;控制 [gap=719]Keywords: migratory birds;stochastic perturbations;saturation incidence rate;control
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【岳华】个人资料_岳华经历_岳华最新消息_明星粉丝... ... 年:红番区 / Rumble in the bronx 年:候鸟 / Migratory bird 年:伤城 / Confession of Pain ...
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Migratory Bird Treaty Act 候鸟协定法案
Reifel Migratory Bird Sanctuary 候鸟保护区
International Migratory Bird Day 月的第二个周六
migratory bird observation station 候鸟观察站
Bear River Migratory Bird Refuge 河候鸟保护区 ; 推荐游览熊河候鸟保护区
like migratory bird 仿佛候鸟一样
migratory bird habitat 候鸟栖息地
In 1934, with the passage of the Migratory Bird Hunting Stamp Act (Act), an increasingly concerned nation took firm action to stop the destruction of migratory waterfowl and the wetlands so vital to their survival.
1934年,随着《候鸟狩猎印花税法案》的通过,为阻止对迁徙的水禽以及对水禽生存至关重要的湿地的破坏,一个日益感到担忧的国家(指美国)采取了坚决的行动。
About 98 cents of every duck stamp dollar goes directly into the Migratory Bird Conservation Fund to purchase wetlands and wildlife habitat for inclusion into the National Wildlife Refuge System—a fact that ensures this land will be protected and available for all generations to come.
每1美元的鸭票中约有98美分直接转入候鸟保护基金,用于购买湿地和野生动物栖息地,将其纳入国家野生动物保护区系统——这一做法使得土地受到长久的保护。
For photo of Northern Harriers, Bear River Migratory Bird Refuge, ut.
这张白尾鹞照片摄于犹他州贝尔河候鸟保护地。
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