winter hardy tree species

例句：

1. 1. Thesetrees are known for their ability to survivethe harsh winter conditions in the northern regions.
   这些树木因其能在寒冷的北方地区生存而闻名。
2. 2. The research team focused on identifyingand studying these winter hardy tree species.
   研究小组专注于识别和研究这些耐寒树种。
3. 3. The forestry department is working ondeveloping new varieties of winter hardy treespecies to enhance biodiversity.
   林业部门正在努力开发新的耐寒树种品种，以增强生物多样性。