break后面接介词up，brea down分解发生故障失败毁掉制服，break out v. 爆发突发 等，break up中文意思是“打碎，破碎结束解散衰落”

The authorities have urged people to stock up on fuel in case hostilities break out.当局已敦促人们储备燃料以防战争爆发。