lighten something up
phrasal verb with lighten verb uk/ˈlaɪ.tən/ us/ˈlaɪ.t̬ən/
使…轻松活泼，使…不那么严肃
to make a speech or piece of writing less serious
I thought I'd slip in a few jokes to lighten up the talk. 我本想在讲话中加几个笑话来调剂一下气氛。
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。