For example, one who doesn't know the rules a about plagiarism (剽竊) may accidentally use words or ideas without giving proper credit or one who fails to keep careful research notes may unintentionally fail to quote and cite sources as required.
出自-2011年12月閱讀原文
英語六級真題
On their way to creating a feminist paradise, the Swedes have unintentionally created a haven (避風港) for normal mortals.
出自-2014年6月閱讀原文
柯林斯高階英漢雙解學習詞典釋義
ADJ
非故意的；無心的
Something that is unintentional is not done deliberately, but happens by accident.