noun 下载 🔗分享 光子,光量子。 The quantum of light and other electromagnetic energy, regarded as a discrete particle having zero rest mass, no electric charge, and an indefinitely long lifetime. It is a gauge boson. Examples : "Sunlight is made of countless photons, each carrying a tiny amount of energy. " 阳光由无数的光子构成,每个光子都携带微量的能量。 physics energy science phenomena 与AI对话词汇游戏阅读练习