(noun.) a detriment or sacrifice; 'at the expense of'.
(noun.) amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures).
(noun.) money spent to perform work and usually reimbursed by an employer; 'he kept a careful record of his expenses at the meeting'.
(verb.) reduce the estimated value of something; 'For tax purposes you can write off the laser printer'.
录入:皮埃尔
校对:卢埃林