scrounge up 找到、搜集
I'm gonna go scrounge up a decent meal. You girls want anything?
我準備去找點好吃的東西女孩們想要點什么嗎?
If you can't scrounge up a few hundred dollars to start a business then you really don't want to start a business.
如果你不能攢足幾百美金的話，那么你可能真的不想去創業。

add up 加起來; 總計
These fees add up to rather large sums.
這些費用累加后的總和相當巨大。
If the numbers add up, such measures would help.
加在一起，這些措施將會有所幫助。

pay back 償還; 報復; 報答; 償付
First you pay back what you owe.
先把你欠的還了。
This worked well enough, until it came time to pay back the loans.
知道償還資本的時間到來之前，這一手法運行還算不錯。