講解：
haggle (with sb) (over sth)
爭論；(尤指)講價:
I left him in the market haggling over the price of a shirt.
我扔下他自己在市場上就一件襯衫討價還價。

convince sb to do
說服,勸說(某人做某事):
I've been trying to convince him to see a doctor.
我一直勸他去看病。

set your sights on sth / on doing sth
以…為奮斗目標；決心做到:
She's set her sights on getting into Harvard.
她決心要上哈佛大學。

equivalent (to sth)
(價值、數量、意義、重要性等)相等的,相同的:
Eight kilometres is roughly equivalent to five miles.
八公里約等于五英里。

dare sb to do
激(某人做某事)；問(某人)有沒有膽量(做某事)；諒(某人)沒膽量(做某事):
Some of the older boys had dared him to do it.
幾個大男孩激他,問他敢不敢干這事。