LED guardrail light is a tube lighting of LED light source.By several refractions of inner-toothed PC shell, it emits soft, well-proportional light.是什么意思_LED guardrail light is a tube lighting of LED light source.By several refractions of inner-toothed PC shell, it emits soft, well-proportional light.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句