临时收入

【经】 casual revenue; extraordinary receipts; extraordinary revenue
incidental revenue

临时的英语翻译：

at the time when sth. happens; for a short time; temporarily
【计】 temporary
【经】 ad hoc

收入的英语翻译：

earning; include; income; ingather; ingathering; means; receipt; revenue
【医】 admit
【经】 earnings; incomings; proceeds; receive; revenue income; takings