下坡

I eased down the slope with care.

我小心地慢慢。

You can coast downhill on a bicycle.

你可骑自行车滑。

He is on the downward path.

他正在走路。

The train rocketed downhill.

火车急速滑。

Is Western society going downhill?

西方社会是在走路吗?

Curve and uphill path resistance are great, linear resistance is little, declivous path still has quicken force.

曲线及阻力大,直线阻力小,还有加速力。

On the level distribution, the density of seed was higher in mesoslope and lowslope.On the vertical distribution, the number of seed took on a decreasing trend with the depth of soil increased.

种密度水平分布和较高，在垂直分布随着土壤深度加深呈现减少的趋势。

Such results are gotten: (1) Due to the unique topography the wind of Beijing area during the day time is southern anabatic wind and in the night is northern katabatic wind in summer.

(1)北京区域夏季边界层风场受西北特殊地形的影响,夜间低层大气流场常表现为由北向南的风,白天逐渐转为由南往北的风。