sketch something in
phrasal verb with sketch verb [ I or T ] uk/sketʃ/ us/sketʃ/
提供有关…的细节
to give more details about something
He sketched in a few more facts about the case. 他为这一事例提供了更多一些事实。
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。