double-blind

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In the best of all worlds, treatments are selected on the basis of multiple independent double-blind studies.
所有世界上最好的，針對自閉症的治療措施，應出自基於多種獨立的雙盲研究。
The experiment was double-blind—neither the subjects nor the scientists knew which liquid was which—a technique considered especially strong in research science.
因爲使了一種被認爲特別強的技術，這個實騐是雙盲的，無論實騐對象還是科學家都不知道哪個液躰是什麽。
But it turns out there are some small but well-conducted double-blind studies demonstrating significant reductions in migraines in people taking one of these supplements.
但結果是有雖然小但是反映良好的雙盲測試証明喫任意一種營養品的人，偏頭痛症狀確實有明顯減輕。

Removing the double-blind restriction in such an environment is an invitation for science abuse.
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Neither doctors nor patients knew who was getting what until the end (that's the double-blind part).
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Many providers of alternative therapy say it is inherently unsuited to double-blind randomised trials.
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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.

A double-blind study or experiment compares two groups of people, one of which is being tested while the other is not. Neither the people doing the testing nor the members of the two groups know which group is being tested. (AB)