Ulmus pumila

例句：

1. 1.The elm tree is a symbol ofstrength and resilience.
   榆树是力量和韧性的象征。
2. 2. The poplar treesare tall and have long branches.
   杨树很高，树枝很长。
3. 3. The elm treeprovides shade for the people in the park.
   榆树为公园里的人们提供阴凉。