adj.放弃的；删除的
动词discard的过去式和过去分词形式.
Discarded material, such as glass, rags, paper, or metal, that may be reused in some form. 破烂，垃圾丢弃的东西，如玻璃、碎布、纸片或金属等可以用某种方式重复使用的东西
She discarded a four, and picked up a king. 她打出一张四点的牌，抓起一张K。
He discarded his winter clothing. 他把冬天穿的衣服都丢弃了。
History discarded him. 他被历史所抛弃。
