 美 
											[ɪn 'kwestʃən]
										
													美 
											[ɪn 'kwestʃən]
																 
										
							
																																	"the candidate's doubtful past"
																							"he has a dubious record indeed"
																							"what one found uncertain the other found dubious or downright false"
																							"it was more than dubitable whether the friend was as influential as she thought"
																															
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海词词典,十七年品牌