据权威统计资料显示：截止2009年底，网上旅游预订使用率的年增幅很高，发展趋势势不可挡。
According to authoritative statistics: By the end of 2009, the annual growth rate of Online travel booking is high, and the development trend is irresistible.
在旅游区，应强调规划的权威性。
In the tourist zone, should emphasize the authoritativeness of planning.
死海的逐渐消亡多年前就引起了环境活动家、实业家和旅游业权威们的警觉。
The gradual disappearance of the Dead Sea has alarmed environmentalists, industrialists and tourist authorities for years.
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