sungei

例句：

1. 1. The tree produces acorns that are used for food and fuel.
   这棵树结出橡子，用于食物和燃料。
2. 2. The sap from the tree is rich in nutrients.
   树汁富含营养。
3. 3. The nut is a popular snack in many cultures.
   坚果是许多文化中的流行零食。