经济学是有关人类活动的学科之一。
Economics is one of the subjects which concern human activities.
论述主要由于人类工程活动而引起的塌陷灾害及塌陷工程学。
The subsidence disaster caused by engineering activities of mankind and the subsidence engineering are discussed.
人类的意识和审美观念以及审美活动的前形态原始形象符号活动都有其生物学的根据。
There are biological foundation for some factors, such as human consciousness, idea and formation of appreciation of the beautiful, original image, symbol and activity.
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