I'm taking Mary to Hawaii for our honeymoon.

我要带玛丽去夏威夷度蜜月。

That sounds like fun, but it'll cost you an arm and a leg.

听起来很好玩，但是那会花你很多钱。

That's true. I'm having to use three years of saving for this trip.

是要花很多钱。这趟旅行得用掉我三年的积蓄。

I hope it's worth it.

我希望那是值得的。

cost an arm and a leg 付出过高的代价

worth prep.相当于……价值的，值得……的 n.价值