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Engineering
The discipline, art, skill and profession of applying scientific knowledge and principles to the design and manufacturing of machines, structures, devices, systems, materials and processes.
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妊娠
Archaeology; Evolution
動物從卵和其植入在牆上的子宮誕生的年輕人 (分娩)，直到受精軸承活青年 (特別是哺乳動物） 期間，期間青年發展的子宮。在人類妊娠稱為妊娠，需時約九個月 （40 ...
