要关于树是环保卫士的一段英文（至少50个单词）急~~

要关于树是环保卫士的一段英文（至少50个单词）急~~

给你了~

tree 英[tri:] 美[tri] 过去式：treed 过去分词：treed 现在分词：treeing 复数：trees n. 1.树, 乔木 2.树状图, 世系图 名词 n. 1.树, 乔木 the old trees were profiled against the pale sky. 那些老树的轮廓映衬在苍白的天空上。 there're some apples on the tree. 那棵树上有几个苹果。 there's a bird in the tree. 树上有只鸟。 2.树状图, 世系图 a family tree is a diagram with branches, showing how the members of a family are descended and related. 家谱是说明家族成员血缘承袭关系的明细分支图。