英语翻译

问题描述:

英语翻译
It isn't worth the trouble.
The sun was well up in the sky.
放在语段中这句话怎么理解?
One day,a farmer was walking along a road with his son Thomas.The father said,"Look!There is a horseshoe.Pick it up and put it in your bag." Thomas said,"Tt's isn't worth the trouble."His father said nothing but he picked it up himself.

没这个必要