He felt a tremor of apprehension…是什么意思？

He felt a tremor of apprehension…

他感到一阵恐惧。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

felt

n. 毛毡；v. 摸索( feel的过去式和过去分词 )，触，深感，以为；

例句
She felt as if his words had granted her absolution.
她感觉他的那番话好似给她下了道赦令。

tremor

n. 震颤，战栗，震颤声，大地的轻微震动；

例句
He felt a tremor in his arms...
他感到胳膊不由自主地颤动。

of

prep. 关于，属于…的，由…制成；aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气]；

例句
He did have a real knowledge of the country...
他对该国的确知之甚多。