sitting g duck易击中既目标
Be A Sitting Duck坐以待毙
a sitting duck易捕获的猎物;容易被打击的对象;易捕捉的猎物;翻译
He is a sitting duck他是冤大头
N-COUNT（可数名词） If you say that someone is a sitting duck, you mean that they are easy to attack, cheat, or take advantage of. 易受攻击的目标; 容易受骗的人; 容易被人利用者 [非正式]
Nancy knew she'd be a sitting duck when she raised the trap door.
南希知道，当她抬起陷阱门时，她就会成为被攻击的目标。