tree是可数名词。tree的复数是trees.
treen.树;树木;乔木
The path led through the trees to the river.
这条小路穿过树林通向河边。
They cut away all the dead branches from the tree.
他们把这棵树上的`枯枝全都砍掉了。
The house is easily identifiable by the large tree outside.
这房子很容易从外面的这棵大树辨认出来。
水利万物而不争,
而万物莫能与之争。
