oakum

例句：

1. 1. The oak tree is the largest in the forest.
   橡树是森林中最大的树。
2. 2. He gathered the oakum from the floor to make a new board.
   他从地板上收集了橡子来制作新的木板。
3. 3. The oakum was used as fuel for the fire.
   橡子被用作火的燃料。