tremulous
He was in a state of tremulous excitement.
他激动得直发抖。 trem= to quiver 颤抖 tremble v. 发抖；摇动
trem 颤抖 + ble → 发抖；摇动
His mouth became dry, his eyes widened, and he began to tremble all over
他嘴唇发干，眼睛圆睁，全身开始颤抖起来。
tremendous adj. 惊人的；巨大的
trem 颤抖 + end 末，尾 + ous …的 → 让人从头到尾颤抖的 → 惊人的
He plays the character with tremendous concentration combined with a pleasing modesty.
他表演这个角色时倾注了巨大的心血，而且非常谦虚和善。
tremor n. 震动；小地震
trem 颤抖 + or 表名词 → 震动；小地震 tremulous adj. 发抖的
trem 颤抖 + ul + ous 有…性质的，关于…的 → 发抖的
quiver
Jane couldn't help the quiver in her voice.
简不禁声音颤抖。
Her heart gave a flutter when she saw him.
她见到他时心怦怦乱跳。 记忆技巧：flutt〔= flu流〕+ er 反复动作，连续动作；拟声动作 → 流动 → 飘动
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