第三人称单数：ad-libs
第三人称复数：ad-libs
现在分词：ad-libbing
过去分词：ad-libbed
过去式：ad-libbed
及物/不及物动词即兴演出; 当场作出; <口>随口说出（俏皮话）; 无准备地说（或做）
形容词即兴的; 即席发言的; 临时插入的; 当场作出的
副词<口>临时插入地; 随便地; 任意地; 当场
名词<主美>临时插入的台词（或动作），即兴的音乐，即席的发言（或评论）
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1. 即兴演出，临时插入（脚本或讲稿中没有的台词）
If you ad-lib something in a play or a speech, you say something which has not been planned or written beforehand.
e.g. He began comically ad-libbing a script...
他即兴调侃起了一段剧本。
e.g. He's good at ad-libbing his way out of trouble...
他善于为自己妙语解围。
2. 即兴（或临时插入）的台词
An ad-lib is something which is said without having been planned or written beforehand.
e.g. Every time I fluffed a line Lenny got me out of trouble with a brilliant ad-lib.
每次我台词出错时，伦尼都通过机智的临场发挥帮我解围。
noun
1. ad-lib
1. remark made spontaneously without prior preparation
e.g. his ad-libs got him in trouble with the politicians
verb
1. perform without preparation
e.g. he extemporized a speech at the wedding
Synonym: improvise improvize extemporize extemporise
adj
1. with little or no preparation or forethought
e.g. his ad-lib comments showed poor judgment
an extemporaneous piano recital
an extemporary lecture
an extempore skit
an impromptu speech
offhand excuses
trying to sound offhanded and reassuring
an off-the-cuff toast
a few unrehearsed comments
Synonym: extemporaneous extemporary extempore impromptu offhand offhanded off-the-cuff unrehearsed
2. said or done without having been planned or written in advance
e.g. he made a few ad-lib remarks
Synonym: spontaneous unwritten