ATTACKsomeone who is easy to attack or easy to cheat 易受攻击者;易受骗者
Out in the open, the soldiers were sitting ducks for enemy fire.
在毫无掩蔽的地方,战士们就成了敌人炮火的活靶子。
Examples from the Corpus
sitting duck• This makes the whole colony a sitting duck for a man with a gun.• Being left in front, Morley Street looked a sitting duckapproaching the line but scrambled home.• Raskin was proceeding gingerly, aware that Macintosh was a sitting duck for cancellation.• She was a sitting duck out here all by herself!• We were like sitting ducks for pickpockets in the city.