点击下方单词,选择对的这个单词
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noun
1. uncertainty about the truth or factuality or existence of something
e.g. the dubiousness of his claimthere is no question about the validity of the enterprise
Synonym: doubtdoubtfulnessquestion
2. the state of being unsure of something
Synonym: doubtuncertaintyincertitudedubietydoubtfulness
多通过句子记忆单词,而不是单独死记硬背。