crux /ˈkrʌks, ˈkrʊks/
十字架形,關鍵,難題
Crux n.; pl. E. Cruxes L. Cruces Anything that is very puzzling or difficult to explain.
The perpetual crux of New Testament chronologists. --Strauss.
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Crux
n 1: a small conspicuous constellation in the southern hemisphere
in the Milky Way near Centaurus [syn: Southern Cross,
Crux Australis]
2: the most important point [syn: crux of the matter]