种树的英语表达可以是 "plant trees" 或 "plant a tree"。以下是一些相关的英语表达:
Planting trees
Planting a new tree
Tree planting
Participating in a tree planting event
Planting trees for environmental protection
Contributing to afforestation efforts
Planting trees to improve air quality
Joining a community tree planting project
Engaging in tree planting activities
Sowing the seeds of a greener future by planting trees