苦心经营  Elaboration

苦苦地  bitterly

地心地固坐标系  earth-centered earth-fixed(ECEF) coordinate system; ECEF; earth centered earth fixed; earth-centered and earth-fixed(ECEF) coordinate system; ahead thrust; ECEF coordinate system

地心地平  geocentric horizon

地心地平面  geocentric horizon

地心经度  geocentric longitude

经营心理学  management psychology

漫不经心地  indifferente; indifferentemente; ohne Rücksicht; avec nonchalance; spensieratameate; con indifferenza; Negligente; con negligenza; absently

心经经脉  heart meridian

心经经轴  stuffer beam

草地经营体系  range management system

城市土地经营  Urban land management; urban land operation

经营地位  business position

农村土地经营体制  rural land management system

农地经营  management of agricultural land

农地经营权  management rights of country land

农民土地经营权  peasants’ right of land operation

企业经营经济学  enterprise management economics

山地经营  exploitation of the mountainous regions