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

精神分裂症的最常见的一个症状就是幻听。

...patients with flu symptoms.

有流感症状的病人

If the symptoms persist, it is important to go to your doctor.

如果这些症状持续存在，一定要去看医生。

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

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。

The contradictory statements are symptoms of disarray in the administration.

这些互相矛盾的说法反映了管理的混乱。