After all, it's hard to do a double-blindtest when the subjects can see for themselves whether or not the light is on.
毕竟,要做双盲测试是很困难的,因为受试者自己可以看到灯是否亮着。
2
So, in fact, this doubleblind placebo controlled study does not guarantee safety or efficacy because the test leaves far too many questions unanswered.
所以实际上,双盲对照研究并不会保证疗效和安全,因为它留下太多无法回答的问题。
3
Methods The test was randomized, double-blind, parallel study.