expendable /ɪkˈspɛndəbəl/

• 1. 

  ADJ If you regard someone or something as expendable, you think it is acceptable to get rid of them, abandon them, or allow them to be destroyed when they are no longer needed. 可消耗的 [正式]

  例：

  Once our services cease to be useful to them, we're expendable.

  一旦我们的服务对他们没了用，我们就是可消耗的了。

  例：

  During the recession, training budgets were seen as an expendable luxury.

  在衰退时期，培训预算被看成是消耗的奢侈品。