have something under your belt idiom
已经掌握…；已经获得…
to have learned or succeeded in something that might be an advantage in the future
Basic computer skills are a good thing to have under your belt. 掌握基本的电脑使用技巧对你有好处。
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。