世界人口从1961年的30亿到2007年的翻了一倍多。当前农业产量(见546页)紧跟其上——并估算显示此情况将持续下去。
The world's population more than doubled from 3 billion between 1961 and 2007, yet agricultural output kept pace - and current projections (see page 546) suggest it will continue to do so.
今天国家档案馆公布的14个文件显示，从1993年到1996年，共有800多份目击报告，同时还有超过4000页可以追溯到1981年的内容。
The 14 files released today by the National Archives include more than 800 sightings reported between 1993 and 1996, and contain more than 4, 000 pages of material dating back to 1981.
如果表单有多页，告诉用户进行到哪步了。
Guideline 10 - Tell users how many steps are left if it's a multi-page form.
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