An atom itself is a complete whole, with its electrons, protons and neutrons and other elements...一个原子本身就是一个完整的整体，包括电子、质子、中子及其他元素。The neutrons and protons form the core of the atom.中子和质子构成了原子核.A substance donates protons...
Certainly, Andreessen didn't think up using hypertext to link Internet documents.当然,用超文本链接因特网文档并不是安德烈亚森发明的.I've got to think up something to wear for the fancy dress party.我得想出去参加化装舞会时应穿戴的东西.An author must have...