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| kingpin; staple (чего-либо); bookend (the three bookends of Middle East – Iran, Algeria and Egypt Sibiricheva) | |||
| main workhorse | |||
| main member | |||
| major element | |||
| main tie | |||
| central feature (financial-engineer) | |||
| main-level entry | |||
| pivotal entry (в матрице); primary element (питания); the staple (чего-либо) | |||
| leading entry (матрицы VPK); pivot | |||
| basic element (выделенный) | |||
| master element | |||
| key piece | |||
| primary member; main element; principal item | |||
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| mail member | |||
| главный элемент: 19 phrases in 13 subjects |
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