例句與造句

1. With a wide river front and a large area of tree mass, there are numerous business activities with potential for tourism and leisure.
2. In 2004, their book " Season s Gleamings : The Art of the Aluminum Christmas Tree " renewed public appreciation for the Aluminum Christmas trees mass-produced in Manitowoc in the early 1960s.
3. It's difficult to find tree mass in a sentence. 用tree mass造句挺難的