depreciation [dɪˌpri:ʃɪ'eɪʃn]

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n.价值低落，贬值，蔑视，贬低

when something loses value

She can't bear the depreciation of the enemy. 她受不了敌人的蹂躏。
They wrote off 500 for depreciation of machinery. 他们注销了500镑作为机器折旧费。