關鍵詞：play both ends against the middle 使鷸蚌相爭而得漁翁之利
短語釋義：鷸蚌相爭漁翁得利是中國的一個成語，喻指雙方爭執不下，結果兩敗俱傷；讓第三者獲得好處。英文中有一個類似的表達：play both ends against the middle。End是個大家都熟悉的詞。它通常解釋為末端，但是這個習慣用語里ends指對立的兩方。有一種說法是play both ends against the middle其實就指發牌的莊家讓玩牌的人同時下兩筆賭注。現在如果我們說某人play both ends against the middle，這人就是在對立雙方間玩弄手腕，造成雙方相爭，使自己得利。

情景領悟：
1. Let's not let him play both ends against the middle by starting a fight between you and me.
別讓他挑撥我與你相爭而他從中得利。
2. Ed Green won by playing both ends against the middle: one opponent was conservative, the other liberal.
Ed Green在對立兩派間耍弄手段而贏得了選舉勝利。他的兩個競爭對手分別是保守派和自由派。
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