convincing 有說服力的;令人信服的solid 很有力的;有邏輯性的disorganized 雜亂無章的vague 模糊的;籠統的Her argument is convincing.The essay is disorganized.His argument is solid.The article is vague.His argument is vague.Her argument is solid.Her essay is convincing.crucial 關鍵的fundamental 基礎性的thought-provoking 發人深省的eye-opening 大開眼界的This test is crucial.The lecture was eye-opening.That class is fundamental.This book is thought-provoking.This class is eye-opening.