the proof of the pudding (is in the eating) idiom saying (also the proof is in the pudding)
布丁好不好，吃了才知道（只有通过体验才能判断事物的好坏;空谈不如实证）
said to mean that you can only judge the quality of something after you have tried, used, or experienced it
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。