rubbishy

例句：

1. 1. The rubbishy stuff is just a waste of time.
   那些乱七八糟的东西简直就是浪费时间。
2. 2. He was so rubbishy about the new technology that he missed out on all the benefits.
   他对新技术的态度如此消极，以至于错失了所有好处。
3. 3. The rubbishy idea of using plastic bags for recycling has been proven to be ineffective.
   使用塑料购物袋进行回收的想法是无效的。