百科全书编辑者

Over the course of its history, the Britannica has had difficulty remaining profitable-a problem faced by many encyclopaedias.

在其悠长的历史轨迹中，能否保持其信息的有效性一直都是《不列颠》所不得不正视的问题--这也同时困扰着诸多其他百科全书编辑者。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。