doubtful的精選

doubtful可疑的常見釋義英[ˈdaʊtfl]美[ˈdaʊtfl]adj.可疑的懷疑拿不定主意不確定未必難說不大可能不明朗懸而未定可能變糟低劣的例句Intrulydoubtfulcases，onlytestcrosseswillrevealtheactualgenotype.puzzled困惑...