他的脾气是最急躁的.His temper is of the quickest.她让这个急躁的孩子平静下来.She quieted the fretful child.他神情不安, 急躁的举止中有点担忧, 这使我吃了一惊.The disquietude of his air, the somewhat apprehensive impatience of his manner, surprised me....

“急躁的”的英语可以翻译为：impatient，irritable，snappish，hot-headed，edgy ...