swear by something
phrasal verb with swear verb uk/sweər/ us/swer/ swore | sworn
informal
非常相信（某物有效或有用）
to believe strongly that something is effective or useful
My dad swears by these vitamin pills. 我爸很相信这些维生素片。
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。