All of the doses of imidacloprid, both high and low, that Dr Whitehorn gave her bees were sublethal—in other words, insufficient to kill the insects outright.

所有的吡虫啉无论剂量大小，Whitehorn博士都把亚致死量用在她的蜜蜂上，换句话说，立刻杀死昆虫。