“浪费的”用英语怎么说？

他们正在寻找减少自然资源浪费的方法。They are looking at ways of reducing the waste of natural resources.这是个浪费的时代.It was an extravagant age.学生会在校园里发起一场反对浪费的运动.The Students'Union waged a compaign against waste on the campus....