Crux
Crux nghĩa là chòm sao Nam Thập Tự
Các nghĩa
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chòm sao Nam Thập Tự
A distinctive winter constellation of the southern sky, shaped like a cross. It appears in the flags of several countries in Oceania.
That's the crux of the matter.
Here's the crux of the problem.
This seems to be the crux of the whole matter.