词源 |
crucial. In the sense of decisive, or of supreme importance, crucial comes from Francis Bacon’s phrase instantia crucis, Lat- in for being present at the cross, which he used metaphorically for coming to a crossroads signpost or guidepost where a trave- ler has to continue one way or another. Isaac Newton and Robert Boyle later patterned their experimentum crucis, crucial experiment, on Bacon’s phrase. |