1.for sale 出售；待售

The catch: The catalogs will not be for sale, but for browsing only.
需要注意的是：这个目录册仅供浏览，并不对外出售。

A closer look at their neighborhood reveals that they are not alone: Up and down the block, there are "For Sale" signs on the houses, and some neighbours have already had to move out.
靠近观察一下他们的邻居就可以发现，这对夫妇并不是特例：街区上下，很多房子上都挂着“出售”的牌子，一些邻居已经被迫从房子里搬出了。
2.search for v. 寻找；搜索

The default is to search for all categories of vehicles.
默认的设置是在所有的 汽车 分类中搜索。

If you want to search for documents that contain more than one word, use the AND operator.
如果你需要搜索包含一个以上关键词的文档，那么就需要使用 AND 操作符。

3.national wealth 国民财富

Clearly the national wealth is not making it to those who need it most.
显然，这个国家的财富并没有被用到那些最需要它们的人身上。

The WHO European Ministerial Conference on Health Systems and the resulting Tallinn Charter made the case that well-functioning health systems contribute to national wealth as well as health.
世卫组织欧洲卫生系统部长级会议及其通过的《塔林宪章》认为，运转良好的卫生系统有助于增加国民财富和增进健康。