要实现全面、协调、可持续发展，我们应该始终把经济发展作为我们的第一要务。
To conduct comprehensive, coordinated and sustainable development, we should always consider economic development as our primary task.
这一预测向人类呈现出了广泛的社会、经济、环境和政治问题，这些问题需要在当下解决，以确保人类拥有可持续发展的未来。
Such a projection presents mankind with wide-ranging social, economic, environmental and political issues that need to be addressed today to ensure a sustainable future for all.
除了在黑暗时代之外，旅游业一直在持续发展壮大，并且贯穿有记录以来的历史，始终在各文明及其经济的发展中扮演着至关重要的角色。
Travel, except during the Dark Ages, has continued to grow and, throughout recorded history, has played a vital role in the development of civilisations and their economies.
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