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1. He is rather disjointed when he ad-libs.
他即兴表演时，有些语无伦次。
2. The comedian's ad-libs were quoted in the newspaper.
那喜剧演员的脱口妙语被引述在报纸上。
3. The speech was full of ad-libs and witty asides.
讲演中满是即兴之词和诙谐离题之语。