他看起来很紧张不安。

He looks very ___nervous.

神经系统疾病会导致各种身体症状。

___Nervous system disorders can cause various physical symptoms.

他在面试前非常紧张，手心一直冒汗。

He was very ___nervous before the interview, with his palms sweating constantly.

她在演讲前紧张得双手发抖。

Her ___nervous hands trembled before the presentation.