ADJ-GRADED
(声音或动作)震颤的,颤抖的,打战的;(笑容)怯生生的,不自然的
If someone's voice, smile, or actions are tremulous, they are unsteady because the person is uncertain, afraid, or upset.
例句
She fidgeted in her chair as she took a deep, tremulous breath.
她在椅子上坐立不安,轻颤着深吸了一口气。