a. characterized by jerky movements
a. 极度紧张不安的
1. She felt jittery before her big presentation.
在重要的演讲前，她感到紧张不安。
2. The coffee made him feel jittery and anxious.
咖啡让他感到精神恍惚和焦虑。
3. After staying up late, I was jittery all morning.
熬夜后，我整个早上都感到心神不宁。