n.遮光罩 protective light: 防护灯cone of light: 灯光锥形射束; 鼓膜光锥; 光锥, 波利泽尔氏锥; 光锥体light cone: 光锥laser light protective goggles: 激光防护镜angle of cone of light: 锥光角下载手机词典可随时随地查词查翻译