1. 丟棄：所谓废弃物(waste),顾名思义就知道是丢弃(discarded),无用(useless)、不要(unwanted)之物质. 广义而首,包括固态、液态及气态废弃物;狭义而言,多指固体废弃物或含多量固体之废弃物而言. 废弃物有其法令上之定义,

2. 废弃的：discard v.删除,废除,放弃 | discarded 废弃的 | discipline 规程

3. 被丢弃的,抛弃的：Head off to 朝某个方向前进 | Discarded 被丢弃的,抛弃的 | Crash into 碰撞

4. 丢弃,抛弃 (牌)打出：Patrol 巡查,巡逻期间 | Discarded 丢弃,抛弃 (牌)打出 | Tabulate 以表格的形式排列(事实,数字等)

3. 七彩网·英语单词大全

adj

1. thrown away

    e.g. wearing someone's cast-off clothes
           throwaway children living on the streets
           salvaged some thrown-away furniture

    Synonym: cast-off(a)throwaway(a)thrown-away(a)