They showed habitual indiscrimination in the choice of their friends.他们在择友方面向来良莠不分。If you ignore her message because you don't like the way she presents it, you will be throwing out the baby with the bathwater.如果你因为不喜欢她那种呈现信息的方式而不理睬她提供的信息，那么你就是良莠不分一起抛。