Hello Farhad, This means that most of the efforts that large industries have made have failed over and over again. And it seems difficult to impossible to overcome these failures. So, 'overwhelming', in this context means: very large or greater, more important etc than any other Example: An overwhelming majority of the members were against the idea. Longman Dictionary of Contemporary English: https://www.ldoceonline.com/dictionary/overwhelming 'Majority' means 'most'. Longman Dictionary says that 'attempts' means 'an act of trying to do something, especially something difficult attempt to do something" All attempts to control inflation have failed. attempt at (doing) something her feeble attempts at humour at the first/second etc attempt She passed her driving test at the first attempt.' https://www.ldoceonline.com/dictionary/attempt I hope this is helpful.