词汇是语言中最活跃的因素。随着时代的发展和政治、经济、文化的日新月异，许多新词语不断地融入我们的生活。新词语的产生和构造通常是有根据的。本文以《现代汉语词典》新增词语为例，试从本义溯源、词源分析、语素对比这三方面对新增词语的理据进行探究。

Vocabulary is the most active element in a language. With the development of the times and the rapid development of politics, economy and culture, many new words are constantly integrated into our lives. The generation and construction of new words are usually based on facts. This paper, taking the new words in Xiandai Hanyu Cidian as an example, tries to probe into the motivation of the new words from the following three aspects: the original meaning, the etymology analysis and the morpheme comparison.