相关单词近義詞 even chance 勝敗各半(成敗相等)..., chance 可能性, risk 危險, fifty-fifty 平分爲二的luck of the draw, 抽簽, hit or miss 不定的, tossup 擲錢, 一半的機會...臨近詞toss, tossa 返回 toss-up