middle age

one's heart, mind, true motives

One should be able to derive new understanding while revising what he has learned. Learning from the past.

Central European Time

experimental device; experimental equipment

faithfulness, loyalty, devotedness / hardworkingness, painstakingness, diligence / healthiness, fitness

epicenter(AmE), epicentre(BrE) - the point on the Earth's surface directly above the focus of an earthquake. / (figuratively) The focal point of any activity, especially if dangerous or destructive .

(agriculture) damage by plant disease and plant pest - major issues in agriculture

Central Asia - A landlocked area of continental Asia comprising Uzbekistan, Turkmenistan, Tajikistan, and Kyrgyzstan

(anatomy, physiology) philtrum / in company, among people