discernern.discern的变形：discern[di'sə:n; -'zə:n]vt.(用视觉或其他感觉或智力)看出，看见，辨出，觉察出：We discerned a sail on the horizon.我们看见了地平线上的一张帆。He could discern a faint light ahead in the forest.他能看到前面森林里有一线微弱的灯光。了解，理解，认识：We should learn to discern and analyze the essentials