руководство
(управление) ductus [us,
каньон
canno, onis, m;
чередовать
variare [1] (laborem
conterere, o, trivi, tritum (radicem in pulverem); aliquid pinsere, o, pinsui (pinsi), pinsitum (pinsum, pistum); tundere, o, tutudi, tu(n)sum; contundere, pulver(i)are , 1 ;