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勇士，斗士（指勇敢的或表演危險動作的運動員或表演者）
You can refer to a sports player or a performer as a gladiator in order to emphasize how brave or dangerous their actions are.
例句
As the gladiators rolled away from the starting gates, a gasp went up when the Scottish cyclist's left foot clicked out of the pedal.
矯健的自行車手們紛紛騎車沖出起跑門，突然蘇格蘭選手的左腳咔嗒一聲踩空了踏板，觀眾不禁倒抽了一口冷氣。