1. He is rather disjointed when he ad-libs. 他即兴表演时，有些语无伦次。
ad-libs
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。