基本解释[軍事學]槍栓固定卡榫英汉例句雙語例句I also find the device hard to hold when its slid open - the top edges of the keyboard area are sharp and dig into my hands and fingers.我還發現這手機劃開時很難手持-鍵磐上緣鋒利得像要切入我的手掌手指。hold-open device更多例句词组短语短語door hold -open device 保持門開啓裝置hold-open device更多词组专业释义軍事學槍栓固定卡榫