derisory

例句：

1. 1. The old car is a derrisory to the new one.
   这辆旧车对新车来说是个无用之物。
2. 2. He threw away all his useless papers.
   他扔掉了他所有没用的纸张。
3. 3.The company's waste disposal policy is considered a derrisory by some environmentalists.
   该公司的废物处理政策在一些环保人士看来是无用的。