Ulf Buentgen and his team of researchers at the Swiss Federal Institute for Forest, Snow and Landscape Research collected tree-ring data from ancient wood found in medieval castles and Roman ruins.
来自瑞士联邦学院的Ulf Buentgen教授和他的研究队伍从中世纪古堡和罗马城废墟中搜寻古代的木头，企图收集关于树木年轮的信息。
Good-tempered tree fairy guard the ancient forest, leaving the valuable wealth for later generations.
慈祥的树神，守护着几百年留存下来的森林，为后人留下了宝贵的财富。
The forest area of classic garden and ancient tree population should focus on the rejuvenation and pest control.
古树名木和古典园林中的森林区域要重点考虑古树的复壮措施及病虫害的防治等。
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