square off
phrasal verb with square verb uk/skweər/ us/skwer/
US
摆好架势（准备迎战）
to prepare to fight, compete, or argue with someone
The two giants in the fast-food industry are squaring off this month with the most aggressive advertising campaigns yet. 本月快餐业两大巨头展开了异常激烈的广告攻势，拉开阵势准备一决高下。