impartibility number 不可分数
The rising-declining of Haifeng Town in Huanghua was impartibility with salt industry.
黄骅市的海丰镇遗址，其兴衰与盐业密不可分。
The training pattern and educational fashion are supplements for each other and impartibility.
学习模式与教育方式相辅相成，密不可分。
Summary: Tourism planning and practical works are impartibility, because tourism to be used as a widespread social phenomenon to appear still limited.
关于旅游规划的研究与实践是密不可分的，因为旅游作为一种普遍的社会现象出现的历史还是有限的。
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