The term "反响平平" in English can be translated as "average response" or "moderate response." It generally refers to a situation in which the reaction or feedback received is neither particularly positive nor negative, but rather falls within a range of expected responses. For example, if someone asks for feedback on a piece of writing and receives an overall positive response with a few minor suggestions for improvement, they might say that the reaction was "average." In other words, average response suggests that the evaluation falls somewhere in between high and low on a scale of satisfaction or enthusiasm. In general, average response implies that there were no major issues with what was presented or done, but also indicates that there were no particularly standout accomplishments either.