上世纪70年代以来，澳大利亚经济结构发生了重大变化，旅游业和服务业迅速

上世纪70年代以来，澳大利亚经济结构发生了重大变化，旅游业和服务业迅速发展，占国内生产总值的比重逐渐增加，超过了传统的农牧业，成为澳大利亚经济重要的支柱产业。

結果 (英文) 1:

Since the 70 's of last century, Australia economic structure has undergone great changes, rapid development of tourism and services, account for increased as a share of GDP, than the traditional agriculture and animal husbandry, Australia economic important pillar industry.

結果 (英文) 2:

Since the 1970s, Australia's economic structure has undergone major changes, the rapid development of tourism and services, gross domestic product (GDP) increased gradually over the traditional agriculture and animal husbandry, the Australian economy has become an important pillar industry.