square off
[phrasal verb] 1
a : to prepare to fight : to get into the position of two people who are going to fight each other准备打斗;摆好架势(和人)打斗 b : to fight or argue打斗;争论 —
often + against 2
: to compete in a contest在比赛中竞争 —
often + against — see also 3square 1 (above)