橡胶树

例句：

1. 1. The rubber tree produces a valuable substance for industrial use.
   橡胶树生产一种有价值的工业物质。
2. 2. The rubber tree is an important source of natural rubber.
   橡胶树是天然橡胶的重要来源。
3. 3. The rubber tree is often used to make shoes and other footwear.
   橡胶树经常被用来制造鞋子和其他鞋类。