基本解释[物理学]缓冲保护器英汉例句双语例句The lights bump off in sequence. The guard exits, footsteps echoing away. Darkness now.灯一盏接一盏的灭掉，守卫走了，脚步声慢慢地消失。bump guard更多例句专业释义物理学缓冲保护器