discarded tires

• 废旧轮胎

discarded tires的用法和样例：

例句

1. Therefore, the author thinks of making use of worn-out tires to produce new structure for rockfall restraining, including rockfall restraining net of worn-out tires.
   作者设想利用废旧轮胎来发展新型的滚石防护结构，如废旧轮胎拦石网。