求翻译：从《现代汉语词典》中分别选取正性词、负性词和中性词各30个，对三组词的词频、笔画和词性进行平衡。用五点量表由50名大学生对词性进行评价。是什么意思？

Positive words were selected from the "Modern Chinese Dictionary", 30 negative words and neutral words, word frequency, stroke, and part of speech of three groups of words to be balanced. Evaluation of a five-point scale by 50 college students on the part of speech.

From the dictionary of contemporary Chinese, respectively in terms of being selected, and negative word and the word of the 30, a group of 3 of a word-frequency, stroke and word of a balance. Using the 5-point Likert scale from 50 students who undertake an evaluation of the word.

Selects the word, the negative word and neutral word each 30 separately from "Modern Chinese Dictionary", to three group of word word frequencies, the stroke and the lexical category carries on the balance.Carries on the appraisal with five meters by 50 university students to the lexical category.

Selected respectively from the dictionary of modern Chinese words, negative words and neutral term 30, three groups of words the word frequency, stroke, balance and speech. 50 college students using a five-point scale for evaluation of speech.