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| English | Russian |
| a thorn in one's side | заноза (досл. "колючка в (чьём-л.) боку": My professor was an environmental activist when he was younger. Apparently, he was quite a thorn in the oil companies' sides at the time. – ...был той ещё занозой для...  thefreedictionary.com Shabe) |
| a thorn in one's side | как бельмо на глазу |