木节

例句：

1. 1. The tree has many knots on its trunk, which are called "wood knots."
   这棵树的树干上有许多节疤，叫做“木节”。
2. 2. He carefully removed the wood knots from the wooden planks to avoid damaging them.
   他小心翼翼地从木板上去掉木节，以免损坏它们。
3. 3. The carpenter used a chisel to smooth out the wood knots in the door frame.
   木匠用凿子把门框上的木节打磨平整。