They can even send waves from all directions, so they form circular wave fronts and then all the wave energy is channeled into one spot they call the bullseye.

它们甚至可以从各个方向发送波浪，因此它们形成圆形波阵面， 然后所有波浪能量都被引导到一个被它们称为“靶心” 的点。