He dressed well and had impeccable manners.他衣冠楚楚，待人接物无可挑剔。He has an impeccable sense of timing.他有着无可挑剔的节奏感。She had an impeccable aristocratic pedigree.她有纯正的贵族血统。...
BPA ( brooks parsimony analysis ) is one of the most popular methods in the study of historical biogeography.BPA ( brooksparsimonyanalysis ) 是历史生物地理学研究的重要分析方法之一,在过去的20年内得以发展和完善....
官员们对于会谈情况保持缄默.The officials maintained a wall of silence around the talks.我们不应对这件可耻的事保持缄默.We should not pass over this disgraceful affair in silence.侦探们犯了难，半岛上各个群体抱成一团，达成了保持缄默的密约。Detectives have run into a conspiracy of ...