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1·Savannas experience an annual rainfall of between 1,000 and 2,000 millimeters.

热带草原的年降雨量在1000毫米到2000毫米之间。

2·An annual rainfall of four inches is often used to define the limits of a desert.

年降雨量4英寸通常被用来界定沙漠的界限。

3·Today, I found out that Seattle doesn't really get that much rain compared with most US cities in average annual rainfall.

今天，我发现与美国大多数城市相比，西雅图的年平均降雨量并没有那么多。

4·The total annual rainfall is spread pretty evenly throughout the year, and the temperature rarely dips below 60 degrees Fahrenheit.

全年降雨量分布相当均匀，气温很少降到华氏60度以下。

5·In fact, Seattle ranks 44th among major U.S. cities in average annual rainfall.

事实上，西雅图的年平均降雨量在美国主要城市中排名第44位。

6·Average Annual Rainfall: 4.5 in.

平均年降雨量：4.5英寸。

7·Average annual rainfall: 8.3 in.

平均年降雨量：8.3英寸。

8·Average annual rainfall: 50.2 in.

平均年降雨量：50.2英寸。

9·Average annual rainfall: 20.4 in.

平均年降雨量：20.4英寸。

10·Average Annual Rainfall: 12.17 in.

平均年降雨量：12.17英寸。