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以研究和测定天体的位置、距离和运动,建立天球参考坐标系,以及在其他学科中的应用为主要任务的学科。是天文学中最先发展起来的分支学科。
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Landscape Planning and Design with Plants
landscape plant community ecology
landscape plant ecology
landscape planting of classical gardens
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Landscape Plants Design/Landscape Design with Plants
landscape poetry
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landscape resources investigation
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landscapes of the four seasons
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