bladder [ˈblædə(r)]

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n.空话连篇的人，膀胱；囊状物

an organ like a bag inside the body of a person or animal , where urine is stored before it leaves the body

He is a great,pompous bladder of a man.他是个极其浮夸而且喜欢吹嘘的人。
He had a weak bladder.他的膀胱虚弱无力。