marsh trefoil

例句：

1. 1. The marsh trefoils are a symbol of the wetland ecosystem.
   沼泽水仙是湿地生态系统的象征。
2. 2. The marsh trefoils attract hummingbirds to their nectar.
   沼泽水仙吸引蜂鸟来吃它们的花蜜。
3. 3.The marsh trefoils provide habitat for many bird species.
   沼泽水仙为许多鸟类物种提供了栖息地。