rainfly

n. 帐蓬盖

例句与用法：

Excessive rainfall had made the harvest impossible.

雨量过多，丰收已经不可能了。

The mean yearly rainfall is20 inches.

每年平均降雨量是二十英寸。

The lateral or downward movement of dissolved or suspended material within soil when rainfall exceeds evaporation.

淋溶作用当降雨量超过蒸发量时，土壤中溶解或悬浮物的向侧面或向下的运动

The rainfall averages 36 inches a year.

年降雨量平均为36英寸。

This area has very low rainfall.

这个地区雨量稀少。