He argued persuasively, and was full of confidence.他充满自信,论证也令人信服。He'd argued as persuasively as he knew how, but they'd remained obdurate.他已经尽其所能地竭力劝服,但他们依然顽固不化。She gave her evidence calmly and persuasively.她冷静、有力地提出自己的证据。She argues persuasively that the drug should be legal.她雄辩地主张那种药品应该合法。