21.   The trail is a six-mile round-trip from the nature center.

22.   To a nature center in the city, said the federal man.

23.   What is known is the nature center was no longer being tended and it fell in disrepair.

24.   Last week the city of Paris said it would transform a former school in the heart of the capital into a nature center named after the princess.

25.   Nature centers throughout Oklahoma are offering people the chance to spot bald eagles from bridges, buses and boats this winter.

26.   The city of Paris on Thursday said it planned to transform a former school in the heart of the capital into a nature center named after Princess Diana.

n. + center >>共 686
city 6.86%
detention 6.23%
research 3.26%
command 2.34%
distribution 2.28%
treatment 2.18%
trade 2.15%
health 1.85%
control 1.77%
rehabilitation 1.69%
nature 0.17%
nature + n. >>共 178
reserve 21.13%
preserve 9.45%
lover 6.56%
walk 5.91%
center 3.41%
conservation 2.76%
hike 2.76%
park 2.49%
documentary 1.84%
photography 1.84%
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