阶梯英语口语练习:树
tree
树
plant trees
种树
We must plant trees.
我们必须种树
When we want to have more roses we must plant trees.
如果想要更多的玫瑰，必须自己种植
It never will rain roses, When we want to have more roses we must plant trees.
天上不会掉下玫瑰来，如果想要更多的玫瑰，必须自己种植。
单词解析：
tree:树；
实用短语：a rose tree 玫瑰树；
实用例句：March 15 is Tree planting Day. 3月15日是植树节.