noun · A slang term for the line between a woman's breasts, humorously implying it aids career advancement in entertainment.

这位女明星在红毯上穿着大胆，大秀事业线。

noun · In palmistry, a vertical line on the palm believed to represent one's career prospects and life path.

看手相的人说，他的事业线又长又直，预示着事业有成。