1. But too much can increase heart rate, blood pressure, and jitteriness. 但是过量的摄入可以增加心率，血压，静止颤抖。
2. Half of the drug-takers reported such effects, including headaches, jitteriness, anxiety and sleeplessness. 有一半的服用者表示出现了副作用，例如：头疼、神经过敏、焦虑和失眠。
3. Potential side effects of light therapy are rare and most often include jitteriness, a feeling of eyestrain and headache. 光线疗法副作用很罕见，最常见的有神经紧张、眼涩、头疼。
英英解释
n.
1. the anxious feeling you have when you have the jitters
