Lǎorén yòng chàndǒu de shēngyīn shuō le jǐ jù huà.
The old man said a few words in a trembling voice.
Tips
usage
颤抖 can be caused by cold, fear, anger, or old age. 发抖 is a close synonym but more colloquial. 哆嗦 is also colloquial and usually refers to shivering from cold. 颤抖 is more literary.