Crux

[krʌks]

解釋/意思:

(noun.) the most important point.

整理:李奥娜--From WordNet

解釋/意思:

(n.) Anything that is very puzzling or difficult to explain.

格里菲思校對

解釋/意思:

n. a cross: (fig.) something that occasions difficulty.

科尔校對