Irrigation in some parts of the world, and as I mentioned,

灌溉在世界上某些地方就像我提到的
some parts of the United states are absolutely necessary to grow crops.

美国的某些地方必须种植稻谷
For example, here would be

比如说这就是
irrigation in Arizona where lettuce is being grown.

亚利桑那州的灌溉情况那里长着莴苣
Now, those of you who have been to Arizona know that

你们谁去过亚利桑那州的会知道
it's not the most hospitable climate in which to grow crops.

那里的天气并不是最适宜种植作物
In fact, if you see the Arizona

事实上如果你看到亚利桑那州
landscape across a large part of the state,

原始风貌占了整个州的大部分地方
you'd be amazed that anything could

你就会惊讶于除了仙人掌
grow there at all except cactus or things like that.

其他的所有作物都不能生长在那里
The fact that you can grow

事实上你可以在亚利桑那州
lettuce in Arizona is made possible by irrigation,

种植莴苣的原因主要是因为灌溉的存在