One of the most common symptoms of schizophrenia is hearing imaginary voices.

精神分裂症最常见的症状之一是幻听。

patients with flu symptoms.

有流感症状的病人。

Your problem with keeping boyfriends is just a symptom of a larger problem: making and keeping friends.

你在维系同男友的关系时遭遇的困难暴露了一个更大的问题：如何结交朋友和维持友谊。