a :to say officially that (money that is owed to you) will not be paid or does not need to be paid注销,勾销(账项、债款)
The government has agreed to write off the debt.政府已经同意注销这笔债务。
The bank has written off the loan. [=has officially said that the money for the loan is lost because the loan will not be repaid]银行注销了这笔无法偿还的贷款。
b :to take away (an amount) from the total amount that is used to calculate taxes(从计税金额中)扣除
You might be able to write off [=deduct] the cost of the computer on your taxes.计算税款时,你也许可以扣除电脑的费用。
2
write (someone or something) offorwrite off (someone or something):to consider (someone or something) to be lost, hopeless, unimportant, etc.认为…失败(或没有希望、不重要等)
I had written off [=given up on] college because I couldn't afford to pay tuition.我放弃了上大学的梦,因为我付不起学费。
I wrote her off as a friend. [=I decided that she was no longer my friend]我不再把她当朋友了。
I wouldn't write off [=dismiss] the team just yet. The season still has a long way to go.我还不能对这个球队失去希望,本赛季还有很多场比赛要打。
3
write off for (something)chiefly British:to make a request for (something) by sending a letter写信索取
She wrote off for [=sent away for] a free sample.她写信要一个免费样品。