doubtful

adj.拿不定主意; 不确定; 怀疑; 未必; 难说; 不大可能; 不明朗; 悬而未定; 可能变糟 牛津词典 adj. 拿不定主意；不确定；怀疑not sure; uncertain and feeling doubtRose was doubtful about the whole idea.罗斯对整个设想持怀疑态度。 He was doubtful about accepting extra...