怎么说出别人的不满英语

To express someone else's dissatisfaction in English, you can say something like "He/She is unhappy with..." or "He/She is dissatisfied with...". For example, you could say "He is unhappy with the quality of the food" or "She is dissatisfied with the service at the restaurant". It's important to make it clear that the dissatisfaction belongs to someone else and not to you.