问题描述：
he has ponted out that tree is a useful source of income
译：人们从全国各地纷纷前来参观这棵树 这句话为啥这么说
改成many people has visited the tree 这么说可以吗
useful source of
译：人们从全国各地纷纷前来参观这棵树 这句话为啥这么说
改成many people has visited the tree 这么说可以吗
useful source of
问题解答：
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