One way to hold this word: a line drawn straight down the middle, with exactly the same on both sides. What lies on the two sides is what changes. Sometimes it is money or work, cut in half between two people. Sometimes it is the two ways a result could go. Sometimes it is two players and one ball between them.
「fifty-fifty」可以想成從正中間畫一條線，兩邊一模一樣。變的只是線的兩邊放了什麼。有時候放的是錢或工作，兩個人一人一半。有時候放的是一件事可能的兩種結果，哪一邊都有可能。有時候放的是兩個球員和中間那一顆球，誰先碰到都說不準。線永遠在中間，所以這個字永遠只講兩邊，不講三邊。
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