避孕用品

Sanger had begun her battle by challenging the so-called Comstock Laws, statutes that criminalized the sale of contraceptive devices and the dissemination of birth control information.

桑格最初的斗争是向《康斯托克法》发出挑战，这是一部将出售避孕用品和传播避孕知识都视为违法行为的法律。

Of course, condoms are also the most convenient of all of the contraceptives.

避孕套当然也是最方便的避孕用品了。

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。