A：O.K. So, where do you think we can save more money?
      好，那么，你觉得我们可以在哪些方面省钱？

mostly是什么意思

B：Well, we could eat in more. That $300 for entertainment is mostly going to restaurants.
      哦，我们可以多在家里吃饭。300元娱乐费大都花在餐馆了。

A：Yeah, that’s a good idea, and you like to cook. What about the books?
      是的，这个主意不错，况且你也喜欢做饭。那么书呢？

B：No, I need my books.
      那个不行，我得买书。

A：Come on, if we save more money we can retire earlier, and you’ll actually have time to read all those books you buy.
      算了吧，如果我们多存些钱就可以早一点退休，那样你才有时间看完你买的所有书。

B：Well, what about the $50 you spent on a shirt? You could’ve gotten something for less.
      那么，你50元买一件衬衣呢？你可以买件更便宜的。

mostly的翻译

A：O.K. Let’s compromise, if you agree to only spend $75 on books, I’ll agree to only spend $40 for my next shirt.
      好了，我们妥协吧。如果你同意买书只用75元的话，我同意下一件衬衣只用40元。

B：All right. That sounds fair.
      好的，这样才公平。

mostly

A：People always say that Chinese and English are very hard to learn. Sometimes I wish I were learning French or Japanese. Maybe they'd be easier.
      人们常说汉语和英语是很难学的。有的时候我想要是我学法语或日语就好了。 也许这两种语言容易些。

B：Maybe, but maybe not too. It all depends on what language you already speak.
      可能，不过也可能不太容易。这要看你原来是说什么语言的。

mostly

A：Why should that be? What diffrence does it make?
      为什么呢？这有什么关系？

B：Well, languages are more or less equally difficult.Most of the things one language says must be said by every language in some way.
      哦，语言大体上都是同样地难学。一种语言中所说的绝大部分东西，在别的语言中差不多都有。

A：You mean I could learn Chinese easily?
      你的意思是说我学汉语会很容易？

B：No, because your native language is Spanish. But Italian might be easy. It has a lot of words that are similar to words in Spanish. Even the sound systems are more similar than that of Chinese is to Spanish. How difficult a language is to learn depends mostly on how much it resembles your own language.
      不，因为你的母语是西班牙语。所以意大利语可能容易些。它有很多词同西班牙语相似。连它的语音体系也比汉语更接近西班牙语。一种语言是否难学，主要看它在多大程度上同自己的语言相近。

1. 大多;多半;主要地
    You use mostly to indicate that a statement is generally true, for example true about the majority of a group of things or people, true most of the time, or true in most respects.

    e.g. I am working with mostly highly motivated people...
           和我共事的人大多积极性极高。
    e.g. Cars are mostly metal.
           轿车的大部分部件是金属制造的。