文字稿：

Covered in baubles, they are the ultimate symbol of Christmas. But what happens when the party's over?

In Cumbria in the UK, old Christmas trees are being put to good use.

Once drilled into the river banks, these branches help to reduce the force of the water.

It prevents erosion and reduces the risk of flooding. And so recycling means Christmas trees are not just for Christmas.

Vocabulary 词汇:

baubles 小装饰物（挂件）

put to good use 很好地利用

banks 河岸

erosion 腐蚀

recycling 回收利用