虚度时光

例句：

1. 1. He wasted his time on useless hobbies.
   他在无用的爱好上浪费了时间。
2. 2. The company's resources were wasted on ineffective marketing campaigns.
   公司的资源被浪费在无效的营销活动上。
3. 3. It's important to not waste food that could be used for a different purpose.
   浪费食物是重要的，它本可以用于其他目的。