记忆方法
将“castoff”分解为“cast”和“off”，记忆方法是将“cast”想象成抛（投）的动作，而“off”则表示脱落或移除。因此，“castoff”可以理解为“抛掉”或“丢弃”。通过这个动作和结果的联想，帮助记忆这个单词的含义。
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权威例句
- 1. The factory has dumpaged its castoff into that river all along. As result, the river has been polluted.
- 该工厂一直将其废弃物倾倒在那条河里. 结果, 那条河被污染了.
- 2. The castoff produced in pig industry pollutes the air, the water, the soil and so on.
- 规模养猪生产过程中产生的废弃物可对大气 、 水体和土壤等造成污染, 降低环境质量.
- 3. Ceramic ecological paver was investigated with solid castoff such as graphite gangue coal ash coal stone.
- 以石墨尾矿,粉煤灰,煤矸石,垃圾焚烧灰等固体废料为主要原料研制陶瓷环保生态砖.
- 4. Fly ash was a sort of industrial solid castoff which could be utilized again.
- 粉煤灰是一种可再资源化的工业固体废弃物.