指的是将手臂伸入阴户或肛门，必背)的英文

fisting

• 指:    finger
• 的:    4次方是 The fourth po ...
• 是:    Semantics
• 将:    ask; appeal for
• 手臂:    arm
• 伸:    stretch; extend
• 入:    enter
• 阴:    yin,the feminine o ...
• 户:    one-panelled door; ...
• 或:    nǎi-.
• 肛门:    anus; anal opening ...
• 必:    certainly; necessa ...
• 背:    body's back