It has the advantage of cheapness.

这东西有便宜的好处。

We eventually pick two meals, marvelling at the cheapness.

最后我们点了两个菜，对价钱的便宜甚感惊讶。

Cheapness is not the only factor that makes it acceptable.

廉价并不是使它受欢迎的惟一因素。

Thee cheapness of coach travel is its only recommendation.

乘长途 汽车唯一可取之处就是旅费便宜。

And that negates some of the advantage of their initial cheapness.

而且这也否定了太阳能电池最初的廉价的一些优势。