write off：v.勾销；报废；完全无用；写信寄出。write off for写信寄出, 给商行写...。

【例句】
Eventually the project was written off as a government loss.
最终，这次计划被当作政府的一个失败而勾销了。

John's written off four cars. Now he sticks to public transport...
约翰已经报废了4辆车，现在他一直坐公交车。