实验研究的时间跨度很大，从即时阅读到一个月、半年不等。由于阅读时间长，

The time span of the experimental research is very large, ranging from instant reading to one month or six months. Due to the long reading time and the large length of the text, uncontrollable variable factors increase. On the other hand, the vocabulary acquisition of the subjects in the reading process does not necessarily come from the experimental text. This is also the main reason for the difference in research results. How to reduce the influence of variables and establish a scientific scale to record the process of gradual transformation from partial vocabulary knowledge to complete vocabulary knowledge is the future research direction of this type of experiment.

The time span of experimental research is very large, from instant reading to one month and six months. Because of the long reading time, the length of the reading text is large, and the variable factors that are uncontrollable increase. On the other hand, the subjects did not necessarily learn the vocabulary from the experimental text during reading. This is also the main reason for the difference in research results. How to reduce the influence of variables and establish a scientific scale to record part of the vocabulary knowledge gradually into a complete vocabulary knowledge process, is the future research direction of this type of experiment.

The time span of experimental research is very large, ranging from instant reading to one month or half a year. Due to the long reading time and the large length of the reading text, the uncontrollable variable factors increase. On the other hand, the acquisition of vocabulary in the reading process does not necessarily come from the experimental text. This is also the main reason for the difference of research results. How to reduce the influence of variables and establish a scientific scale to record the process of partial vocabulary knowledge gradually changing into complete vocabulary knowledge is the future research direction of this type of experiment.