And we've just recently demonstrated this by putting extract of hydrocarbons on little glass beads, and dropping the beads gently down into the nest entrance at the right rate.
我们最近展示了这个原理。 我们把浓缩的碳氢化合物涂在小型玻璃珠上， 以正确的频率轻轻地丢在蚁穴入口，