求翻译：中国与西澳州的经贸关系由来已久，特别在近年发展势头良好，双方的贸易近年来有长足的发展，此次中国决定选择澳大利亚作为广东液化天然气供气方是中澳发好合作的一个典范，它标志两国关系进入了一个新阶段。是什么意思？

Economic and trade relations between China and Western Australia a long time, especially a good momentum of development in recent years, bilateral trade has developed rapidly in recent years, the Chinese decision to choose Australia as the Guangdong LNG supply side is good cooperation between Austra

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China is long-standing with the west Australia state economics and trade relations, was specially good in the recent years development tendency, the bilateral trade had the considerable development in recent years, this China decided chose Australia to take the Guangdong liquefied natural gas air fe

Economic and trade relations between China and the Western Australia for a long time, especially in the good development momentum in recent years, bilateral trade has seen significant development in recent years, the China's decision to choose Australia as the o in the Guangdong LNG is an example of