These familiar particles also have less familiar second and third generations, which have the same charges as the first but have much higher masses.
친숙한 입자들은 또한 덜 친숙한 2세대 3세대를 갖고 있습니다. 1세대와는 전하가 같지만 훨씬 큰 질량을 갖고 있지요.