招牌上打出闪烁的警语的英文

and the sign flashed out its warning,

• 招牌:    shop sign; signboa ...
• 上:    upper; up; upward
• 打:    strike; hit; knock
• 出:    used as a compleme ...
• 闪烁:    twinkle; glimmer
• 的:    4次方是 The fourth po ...
• 警:    guard against; gar ...
• 语:    tell; inform