在一个带喷头的瓶子里兑水和白醋各半，然后喷洒在蚁穴和它的周围。
Pour equal parts water and white vinegar into a spray bottle. Then spray it on anthills and around areas where you see the insects.
寻找适合进行人工干预的气象条件，然后喷洒化学药品，大约需要出动8至10架飞机。 大气中并非所有的水蒸汽都能转化为降雨，至于降雪，水蒸汽首先应该形成冰晶。
Not all water vapour in the atmosphere turns to precipitation, and for the snow to fall, water vapour should concentrate on ice crystals first.
所以Barbeito和三位志愿者做了如下实验：他们连续73天不刮胡子，然后在胡子上喷洒一种无害的细菌，并证实在这种情况下，细菌比没有胡子的时候更难以清洗。
So Barbeito and three volunteers grew their own beards for 73 days, then sprayed them with harmless bacteria and demonstrated that it was harder to wash the germs out of a beard than off clean skin.
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