lower the tone diminish the spirit or moral character of a conversation, place, etc.
☞ Tone here is used to mean the general character or attitude of a conversation, place, piece of writing, etc.
英语词组固定搭配大全包含15956条英汉双解词组,基本涵盖了全部常用英文词组、短语的翻译及用法,是英语学习的有利工具。