Before embarking on the full project, the team will conduct feasibility tests with a miniature version. At a secret location a smaller balloon will float more than half a mile above the ground pumping water into the atmosphere, so the team can study the impact of spraying particles directly into the atmosphere.

着手整个计划之前，学者们将进行一次小型可行性试验。在一个秘密地点，一个小型氦气球将飞离地面半英里多，抽运水分入大气，小组从而研究气雾粒子直接进入大气的影响。

'We're looking at a balloon which is possibly 100-200m in diameter. It's about the same size as Wembley stadium,' Hugh Hunt, anOxford engineering lecturer, told The Guardian. 'The nice thing about it is that we can really have a knob, if you like, which we can control to adjust the rate at which we inject these particles.'

牛津大学工程讲师休·亨特告诉《英国卫报》说：“我们正在寻找一个直径约100到200米的气球，差不多和温布利球场一样大。非常棒的是我们真的可以得到一个能控制调节粒子注入大气速率的大球体。”

The tests, scheduled for October, are not expected to have any environmental impact but environment groups in Britain and the U.S. said it could affect rainfall and harm food supplies potentially.

试验定在十月，预计不会对环境产生影响。但是一些美英环保团体认为最终的系统部署可能潜在影响降雨和食品供应。

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