You can refer to ideas or theories about how something should be done as nostrums, especially when you think they are old-fashioned or wrong in some way.
例句
...clinging to the nostrums of the dying century.對上世紀的招數(shù)緊抓不放
N-COUNT
(未經科學證明有效的)靈丹妙藥，神藥
If you refer to a medicine as a nostrum, you mean that it is not effective or has not been tested in a proper scientific way.
例句
...pills, tablets, and other nostrums claiming to be magic potions.聲稱包治百病的藥丸、藥片和其他靈丹妙藥
英漢詞典釋義
n.
妙策
some nostrum peddled as a cure for unemployment鼓吹可解決失業(yè)問題的妙策
英英詞典釋義
Noun
1. hypothetical remedy for all ills or diseases; once sought by the alchemists