他表示气象专家自2003年以来已经为人工影响天气做好了准备，尤其是在减雨方面，不过他也承认该项技术作用仍然有限。
He said meteorologists have made preparations for artificial weather modification since 2003, especially on reducing rainfall, but admitted that the technology still has limitations.
技术人员被雇上演壮观的表演，展示自然的各个方面，以太阳、雪和雨为代表。
Technicians were employed to stage spectacular shows which displayed aspects of nature, with representations of the sun, snow and rain.
农田在许多方面的改善与灌溉相关，但是北美洲和印度西部大草原和平原地区的一些雨育农田及牧场也得到改善。
Many gains in cropland are associated with irrigation, but there are also swaths of improvement in rain-fed cropland and pastures in the prairies and plains of North America and western India.
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