小心台阶

Be careful you don't trip up on the step.

你小心别在台阶上绊倒了。

We have to take care up ahead; the rain will have made the steps really slippy.

我们上去以后得小心点儿；台阶被雨水弄得实在很滑。

Downwards, where there exits light, there exist stairs. Upwards, where there exists light, there outstands crag. The ground is quite slippery because of the moisture inside the cave. Please be attentive: now we are beginning to climb up the stairs, please mind your step and be careful with the outstanding

讲解词Introduction speech：下方有灯光的地方就是有台阶的地方；上方有灯光的地方就是有岩壁突出的地方；由于洞内潮湿，所以地面较滑，请您注意；咱们开始上台阶，小心台阶和四周突出的岩壁。

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。