takeoff distance clean 无外挂物起飞距离
One study suggested that lamb from New Zealand, with its clean energy and rich pastures, has a lower footprint when consumed in the UK than locally produced lamb, despite the long-distance shipping.
有研究表明由于新西兰有着清洁的能源和肥沃的牧场，那里的羊卖到英国，尽管经过长途运输，碳足迹还是比英国本地羊要低。
Base treatment: clean and level the surface of EPS board substrate. Distance between EPS board should be filled with thermal insulation materials.
基层处理：粘贴的聚苯板表面应尽量平整、坚固、清洁，必要时可用粗砂纸适当打磨。聚苯板间应压紧，可能出现的板缝须用保温材料或发泡胶填充。
LNG is nowadays the most secure and clean energy source which is transported for a long distance and used directly in the world.
LNG是当今世界上最安全、适合长距离运输并可直接利用的最清洁能源。
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