1、 The concept of releasing aerosol sprays into the stratosphere above the Arctic has been proposed by several scientists.
一些科学家提出了向北极平流层释放气溶胶喷剂的概念。
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2、 They farm fungi, raise aphids as livestock, launch armies to war, use chemical sprays to alarm and confuse enemies, capture slaves, engage in child labour, exchange information ceaselessly.
它们培养菌类，将蚜虫当作家畜来饲养，发对军队作战，使用化学喷雾来警告和迷惑敌人，捕获奴隶，雇佣童工，并且不停地交换信息。
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