一較高下

to compete against / to measure oneself against / to go head to head (see who is best)

one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit

to compare / to dispute / compared to / (before adj.) relatively / comparatively / rather / also pr. [jiao3]

surname Gao

high / tall / above average / loud / your (honorific)

relative superiority (better or worse, stronger or weaker, above or below etc)

down / downwards / below / lower / later / next (week etc) / second (of two parts) / to decline / to go down / to arrive at (a decision, conclusion etc) / measure word to show the frequency of an action