American boreal faunal region

例句：

1. 1. The study of the American boreal faunal region is crucial for understanding the ecology of the region.
   研究美国北部哺乳动物群落区域对于理解该地区的生态至关重要。
2. 2. The research on the American boreal faunal region has led to new insights into the behavior and adaptations of these animals.
   对美国北部哺乳动物群落区域的研究表明了这些动物的行为和适应方式的新见解。
3. 3. The American boreal faunal region is home to a diverse range of species, including mammals, birds, andinsects.
   美国北部哺乳动物群落区域是各种物种的家园，包括哺乳动物、鸟类和昆虫。