neutron
n
particle carrying no electric charge, with about the same mass as a proton,and forming part of the nucleus of an atom 中子. Cf 参看 electron, proton.
Kate, I'm sorry about that argument. I apologize for being so angry with you.
凯特,那次争吵我很抱歉。我为跟你发火向你道歉。
Next, if it is not a story, get an idea of the organization of the book. Read the back cover and the introduction. Look at the pictures and the short texts below them. Turn to the front of the book and look at the contents. This way you can decide whether