射击竞赛

Today, biathlon is considered a combination of two sports: cross-country skiing and rifle shooting.

今天两项竞赛被认为是结合了两种运动：滑雪和来复枪射击。

First I should say target shooting as a genuinely competitive sport is fairly modem, about a century ago.

首先，我要说射击作为竞赛项目仅有约一个世纪的历史，相当年轻。

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。