And starring these tiers of leaves were white lotus flowers, alluringly open or bashfully in bud, like glimmering pearls, stars in an azure sky, or beauties fresh from the bath.

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These tiers of leaves were white lotus flowers, alluringly open or bashfully in bud,like glimmering pearls, stars in an azure sky, or beauties fresh from the bath. The

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And starring these tiers of leaves were white lotus flowers, alluringly open or bashfully in bud, like glimmering pearls, stars in an azure sky, or be auties fresh from the bath.

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And starring these tiers of leaves were white lotus flowers, alluringly open or bashfully in bud, like glimmering pearls, stars in an azure sky, orbeauties fresh from the bath.

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And staring at the abundance of leaves were white lotus flowers, alluringly open or bashfully in bud, like glimmering pearls, stars in an azure sky, or beauties fresh from the bath.

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And starring these tiers of leaveswere white lotus flowers, alluringly open or bashfully in bud, likeglimmering pearls, stars in an azure sky, or beauties fresh fromthe bath.

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And starring these tiers of leaves were white lotus flowers, alluringly open or bashfully in bbud, like glimmering pearls, stars in an azure sky, or beauties fresh from the bath.

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Bashfully in bud, like glimmering pearls, stars in an azure sky, or beauties fresh from the bath.

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White flowers are dotted among the leaves, some of which are in full bloom, while some are bashfully in bud like glimmering pearls or stars in the clear night, or like the beauty fresh from the bath.

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After analyzing the merit and lack of 9I model, the main idea is proposed: to distill some basic topological relations from 9I model, of which the composite topological relations of complex objects are made up. In detail, the composite topological relationships between region and region, line and line, line and region are particularly discussed;(2)Analyze the characteristics and inner relations of cadastral features. According to the expressional model of complex topological relations, the author discovers the possible topological relations between parcels, parcel lines and parcel points. In addition, sum up the general topological relationship rules of cadastral data.(3) Then the topological relations model is extended to the spatio-temporal data. Time in cadastral database and change semantic are discussed. It's redefined that spatio-temporal topological relations is composed of time, location, status and event relation. Spatio-temporal topological relationships can be represented by extended 4I model. Taking cadastral parcels as example, there are different possible spatio-temporal topological relationships between parcels when they are extended, shrunken, split, merged or others. Thus, some deductions are drawn that, for example, if parcels have be coexisting for some time they are impossible to be overlapped. Furthermore, the parents of parcels alternated and their possible change types can be detected by their spatio-temporal topological relationships.(4) Before carrying out the experiment, the calculation method must be designed.

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