给(某人)一个信号(让其准备好做某的英文

cue in

• 给:    supply; provide
• 某人:    a certain person
• 一个:    one; a; an
• 信号:    signal; semaphore; ...
• 让:    give way; give gro ...
• 其:    his
• 准备:    prepare; get ready
• 做:    make; manufacture; ...
• 某:    certain; some