A phrase talking about a thing of a sort, or things that satisfy some description with no implication that just one thing does. The sentence ‘a man came here this morning’ contains the indefinite description ‘a man’. See definite description.
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。