between the bark and the wood

例句：

1. 1. He sat between two chairs.
   他坐在两把椅子之间。
2. 2. The cat is between the table and the chair.
   猫在桌子和椅子之间。
3. 3. They are discussing the issue between the two countries.
   他们正在讨论两国之间的问题。