cold 可以作副词,表示“完全地”、“彻底地”的意思,主要用于美国口语。例如:
He learnt his lesson cold. 他把功课掌握得滚瓜烂熟。
The actor had his lines down cold. 那演员已把台词背得烂熟了。
He knew the business cold. 他对业务了如指掌。
He was cold sober. 他完全清醒。
turn down a request cold 断然拒绝一项要求
——摘自陆谷孙主编《英汉大词典》第二版
《朗文当代英语大词典》对 cold 的副词用法有以下归纳(也有相关例句):
adverb
1. [AmE] suddenly and completely 完全地,彻底地; 突然地,贸然地:
Paul stopped cold. “What was that noise?” 保罗突然停下来问道:“那是什么声音?”
2. out cold, [informal] unconscious 神志不清:
He drank until he was out cold. 他喝得酩酊大醉。
You were knocked out cold (=hit on the head so that you became unconscious). 你被打昏了。
3. without preparation 无准备地:
I can't just get up there and make a speech cold! 我不能毫无准备就上去演讲!