{ bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_btmslot' }}]}]; googletag.pubads().setTargeting("cdo_pt", "entry"); { bidder: 'ix', params: { siteId: '195451', size: [300, 50] }}, var pbAdUnits = getPrebidSlots(curResolution); { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_SR' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_rightslot2_flex' }}, "sign-in": "https://dictionary.cambridge.org/auth/signin?rid=READER_ID", 'max': 36, Something not easily done, accomplished, comprehended, or solved. 1 The state or condition of being difficult. ‘He was apparently a difficult man to deal with but always Burnley through and through.’ ‘I'm not saying my brother is a difficult person but he does have trouble committing to family events.’ ‘He is a difficult person but he has never tried to influence me.’ ‘We all know she is a difficult woman, but not that difficult.’ dfpSlots['topslot_a'] = googletag.defineSlot('/23202586/cdo_topslot', [], 'ad_topslot_a').defineSizeMapping(mapping_topslot_a).setTargeting('sri', '0').setTargeting('vp', 'top').setTargeting('hp', 'center').addService(googletag.pubads()); if(!isPlusPopupShown()) var googletag = googletag || {}; { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_btmslot' }}, Following a discussion of authenticity, and of difficulties with obtaining and using authentic mater ials, the article explains the source of the data examined. { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_leftslot' }}]}, { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, "sign-out": "https://dictionary.cambridge.org/auth/signout?rid=READER_ID" We have described difficulties associated with semantic query expansion. { bidder: 'sovrn', params: { tagid: '346698' }}, { bidder: 'onemobile', params: { dcn: '8a969411017171829a5c82bb4deb000b', pos: 'cdo_btmslot_300x250' }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, On the other hand, introduction of logical (or equivalently set-theoretic) operations also leads to a, For example, the basic learning module described in section 4.1 would seem to have, The experiment also recorded a ' user burden ' for each analysis, measuring the. { bidder: 'criteo', params: { networkId: 7100, publisherSubId: 'cdo_rightslot2' }}, All Free. { bidder: 'triplelift', params: { inventoryCode: 'Cambridge_MidArticle' }}, window.ga=window.ga||function(){(ga.q=ga.q||[]).push(arguments)};ga.l=+new Date; { bidder: 'ix', params: { siteId: '195464', size: [120, 600] }}, {code: 'ad_rightslot', pubstack: { adUnitName: 'cdo_rightslot', adUnitPath: '/23202586/cdo_rightslot' }, mediaTypes: { banner: { sizes: [[300, 250]] } }, We overcame two principal difficulties in this study. The events surrounding trading in the shares of the American company GameStop have provided us with one of the more intriguing news stories of recent times. { bidder: 'ix', params: { siteId: '195467', size: [300, 250] }}, an embarrassing situation, esp. 4. a dispute or disagreement. bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776156', position: 'atf' }}, The words arduous and hard are common synonyms of difficult. var mapping_houseslot_a = googletag.sizeMapping().addSize([963, 0], [300, 250]).addSize([0, 0], []).build(); Our new online dictionaries for schools provide a safe and appropriate environment for children. ( often plural) a troublesome or embarrassing situation, esp a financial one. { bidder: 'appnexus', params: { placementId: '11654156' }}, { bidder: 'openx', params: { unit: '539971063', delDomain: 'idm-d.openx.net' }}, ‘The lack of air in a birth chart can indicate difficulty in the expression of that person.’. { bidder: 'onemobile', params: { dcn: '8a9690ab01717182962182bb50ce0007', pos: 'cdo_topslot_mobile_flex' }}, All rights reserved. type: "cookie", { bidder: 'pubmatic', params: { publisherId: '158679', adSlot: 'cdo_rightslot2' }}]}]; { bidder: 'sovrn', params: { tagid: '387232' }}, bids: [{ bidder: 'rubicon', params: { accountId: '17282', siteId: '162036', zoneId: '776160', position: 'atf' }}, { bidder: 'openx', params: { unit: '539971079', delDomain: 'idm-d.openx.net' }}, name: "pbjs-unifiedid", 'max': 3, { bidder: 'sovrn', params: { tagid: '387233' }},