rust out

• • 锈坏：

    This bicycle is rusted out.

    这辆自行车已锈坏。

    It is better to wear out than to rust out.

    与其锈坏不如用坏；与其闲死不如忙死。

  • 因缺少活动而丧失活力：

    He was so lazy that he rusted out when he was still young.

    他懒极了，因此未老先衰。