改签的英文：
ticket changing
endorse the ticket

ticket是什么意思：
n. 票，券；标签；证明书，许可证，执照；传票；传票，罚单
v. 加票签于；指派；对...开罚单（或传票）

Admission by ticket only.
凭票入场。

This is your discharge ticket.
这是你的解雇证明书。

The admission ticket is flat.
门票费是统一的。

changing是什么意思：
v. [change] 的现在分词形式；改变，交换

change a bed;change the baby.
换床单；给婴儿换尿布

We propose 'a change [making a change / to make a change / that a change should be made].
我们建议应做一点改变。

The change of quantity can causes the change of quality.
量变可以引发质变。

endorse是什么意思：
v. 背书；签字；批注公文；赞同；（商品等）代言

She has already endorsed the check.
她已在这支票背书。

Can you endorse the back of the check, please?
可以麻烦你在支票背面签名背书吗？

This chivalrous attitude was not endorsed by their followers in the party
这种侠义的精神未能得到党内其他党员的支持。