Why It Was Almost Impossible to Make the Blue LED
级别 C1 · 375 句 · 33:44 · Veritasium
逐句听 Why It Was Almost Impossible to Make the Blue LED，输入你听到的内容，每个词都会得到批改。
级别 C1 · 375 句 · 33:44 · Veritasium
逐句听 Why It Was Almost Impossible to Make the Blue LED，输入你听到的内容，每个词都会得到批改。