名词
中文翻译：手头操作
同义词：
['on the spot', 'improvisation例句：1. He used his underhand stroke to fix the car.（他用即兴手法修好了车。）']
例句：
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1. He used his underhand stroke to fix the car.
他用即兴手法修好了车。
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2. The artist used underhand strokes to create the painting.
这位艺术家用即兴手法创作了这幅画。
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3. During the emergency, she used her underhand strokes to save the lives of the injured.
在紧急情况下，她用即兴手法拯救了受伤者的生命。