已经有4年降雨量低于平均水平了。
昨晚的降雨量为1.14英寸。
八月份降雨量大并非异常。
这是继前一周的降雨之后出奇干燥的一天。
It was a surprisingly dry day after the rain of the previous week.
维多利亚瀑布今年的降雨量高于平均水平。
Victoria Falls has had above average levels of rainfall this year.
持续降雨迫使了第二天各项比赛的中途停止。
Constant rain forced the abandonment of the next day's competitions.
鉴于今年降雨量少，居民被告诫不得浪费用水。
Residents were warned not to be extravagant with water, in view of the low rainfall this year.
一场热带风暴带来的降雨把岩屑从火山坡上冲走了。
Rainfall from a tropical storm dislodged the debris from the slopes of the volcano.
中高纬度地区的降雨量在过去的20到30年间稳步上升了。
In the middle to high latitudes rainfall has risen steadily over the last 20-30 years.
风在有些地方达到每小时100英里，伴有15分钟内1英寸的降雨量。
Winds reached up to 100 mph in some places with an inch of rain falling within 15 minutes.
角马在迁徙时遵循当地降雨的模式。
The wildebeests follow, in their migration, the pattern of local rainfall.
惊蛰标志着气温上升，降雨量增加。
Awakening of Insects signals a rise in temperature and increased rain fall.
今年武汉的降雨量达到历史最高值。
降雨可以在几小时内使它们恢复生机。
科纳和希洛在同一年的降雨量大致相同。
Kona and Hilo have approximately the same rainfall in a given year.
当雨云移动时，降雨的化学成分略有变化。
The chemical composition of rainfall changes slightly as raid clouds move.
城市的降雨量也在增加。
今年春天，奥索镇的降雨量是往年的两倍。
年降雨量4英寸通常被用来界定沙漠的界限。
An annual rainfall of four inches is often used to define the limits of a desert.
降雨的化学成分随着雨云的移动而发生轻微变化。
The chemical composition of rainfall changes slightly as rain clouds move.
季风是一种季节性的风，它可以带来大量的降雨。
A monsoon is a seasonal wind that can bring in a large amount of rainfall.
人们认为如果气温上升，降雨量将保持在同一水平。
It's believed that rainfall will stay at the same level if the temperature rises.
沛然降雨。
全年降雨量分布相当均匀，气温很少降到华氏60度以下。
The total annual rainfall is spread pretty evenly throughout the year, and the temperature rarely dips below 60 degrees Fahrenheit.
热带草原的年降雨量在1000毫米到2000毫米之间。
Savannas experience an annual rainfall of between 1,000 and 2,000 millimeters.
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