Senses
杠杠/ 槓槓 thick line
A thick line drawn when reading or correcting a text to serve as a mark or to cross something out
杠杠/ 槓槓 standard
(metaphorical) A set standard, limit, or rule; a fixed criterion
杠杠/ 槓槓 excellent
(colloquial) top-notch; excellent; first-rate