单词	double-blind
释义	English Business double-blindadjective uk/ˌdʌb.əlˈblaɪnd/us/ˌdʌb.əlˈblaɪnd/specialized A double-blind study or trial, especially in medicine, is one in which two groups of people are studied, for example with one group taking a new drug and one group taking something else, but neither the people in the study nor the scientist or doctor knows which person is in which group. Thesaurus: synonyms and related words Scientific techniques carbon capture carbon dating clone dissect fixation gene amplification genetic engineering genetic fingerprinting radiocarbon dating thermal imaging tissue culture transgenic vivisection double-blindadjective [ usually before noun ] ukusalso double-blinded used to describe a test of a new product, especially a medicine, in which one group of people is given the new product, and another group is given something that contains none of the product. Neither those being tested nor those doing the testing know which group is which: double-blind study/trial This is a double-blind trial of 400 patients where 60% will get the drug and 40% will get a placebo.
随便看	cover the bases cover to cover cover up cover up cover up (something) cover up something cover version cover your arse cover your ass/butt cover your backside/behind/rear cover your tracks cover yourself cover yourself in/with glory cover-up cover/hide a multitude of sins coverage coverage coveralls coveralls covered covered call covered call option covered option covered put covered put option

double-blindadjective

double-blindadjective [ usually before noun ]