I offended him quite unintentionally.
我触犯了他完全是出于无心.
《现代汉英综合大词典》
The boss cannot say anything that might unintentionally be misinterpreted.
老板不能说一些容易被误解的话.
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Albom's book does give insight into how we unintentionally affect others'lives.
艾尔邦的书让我们看到,我们常会不自觉地影响他人的生活.
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Vegetarians are upset over the fact they may have unintentionally eaten animal extracts.
荤食不小心吃下肚,让茹素的消费者心里有疙瘩.
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People often make the MISTAKE of unintentionally straining their facial and neck muscles.
人们常犯的错误是,不自觉地用脸部或颈部肌肉去拉张.
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Inexperienced or poorly trained yoga teachers may unintentionally cause harm by teaching above their ability levels.
无经验和素质不高的瑜伽教练可能会因超过其教学水平,在不经意间让学员受伤.
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For example, one who doesn't know the rules a about plagiarism (剽窃) 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月阅读原文On their way to creating a feminist paradise, the Swedes have unintentionally created a haven (避风港) for normal mortals.
出自-2014年6月阅读原文Under the plan, for example, the agency said it would not prosecute landowners or businesses that unintentionally kill, harm, or disturb the bird, as long as they had signed a range-wide management plan to restore prairie chicken habitat.
2016年考研真题（英语二）阅读理解 Section Ⅱ"she hit him unintentionally"