stump up
（常指不情愿地）付钱，掏腰包
stump up (for sth)
stump up sth (for sth)
（为…）付钱，掏腰包
同义词：cough up
If you stump up a sum of money, you pay it, often unwillingly.
We were asked to stump up for the repairs.
人家要我们出修理费。
Who is going to stump up the extra money?
额外的钱谁来出？
Customers do not have to stump up any cash for at least four weeks.
顾客们至少四周内都不必付钱。
I'm always being asked to stump up for school outings.
总是要求我为学校郊游付钱。
Whenever Frank gets into trouble his father has to stump up the money for a fine to get him out.
每当弗兰克闯了祸，他父亲就得拿出钱来付罚金，把他领出来。
We all stumped up$ 1 for his present.
我们每人出1美元为他买礼物。
Mr. Green stumped up$ 100 for his son's debts.
格林先生勉强为他儿子还了一百元的欠款。
cough (sth) up
to pay or give money unwillingly ；to give sth, especially money, unwillingly指勉强付出或交出（钱）：
If you cough up an amount of money, you pay or spend that amount, usually when you would prefer not to.
I'll have to cough up $10,000 a year for tuition...
我每年将不得不付1万美元的学费。
She finally coughed up the money she owed.
她最终勉强归还了她的欠款。
Will this be enough to persuade Congress to cough up?
这能说服国会掏钱吗？
Steve finally coughed up the money he owed us.
史蒂夫最终勉强归还了他欠我们的钱。
其实，汉语里经常说：让某人出点血，意思就是让某人话额外的钱。而cough sth (up)（从喉咙或肺中）咳出,如：
Sometimes she coughed (up) blood.
她有时咯血。
I started coughing blood so they transferred me to a hospital.
我开始咯血，于是他们把我转到了医院。
On the chilly seas, Keats became feverish, continually coughing up blood.
在寒冷彻骨的海上，基茨开始发烧，不断地咯血。
He coughed up some drops of blood.
他咯出了几滴血。
He coughed up the candy that was stuck in his throat.
他把卡在喉咙里的糖咯了出来。
