The government pays about $900 for old ones to be discarded and advertising on the new vehicles helps cover repayments.
2015年12月四级真题（第一套）听力 Section A
英语六级真题
It is estimated that in 2014 the world produced some 42 million metric tons of e-waste discarded electrical and electronic equipment and its parts with North America and Europe accounting for 8 and 12 million metric tons respectively.
2019年6月六级真题（第二套）阅读 Section B
Much of the waste is discarded rotten meat, mixed in with other human debris such as plastic bags and old toys.
2017年6月六级真题（第三套）阅读 Section C
柯林斯高阶英汉双解学习词典释义
VERB
丢弃;抛弃
If you discard something, you get rid of it because you no longer want it or need it.