Text2teach enables teachers to use Nokia mobile phones to access full-length science videos provided by Pearson to facilitate learning in the classroom.
text2teach能让老师在教室里通过诺基亚移动电话访问完整的皮尔森·科普视频文件以帮助教学。
Third, change the length of papers published in print: Limit manuscripts to five to six journal-length pages, as Nature and Science do, and put a longer version up on a journal's Web site.
限制发表文章长度在五到六页期刊页面长度，正如《自然》和《科学》杂志目前所采用的方法，并将同篇文章更长的版本放在该期刊的网站上。
A 2001 Army Science Board study recommended that no soldier carry more than 50 pounds for any length of time.
2001年的陆军科学委员会的研究报告建议，任何时候士兵都不应该携带超过50磅重的背包。
In fact, although medical science has extended life expectancy, it has had little or no effect on our life span (the maximum length of life possible in our species).
虽然医药科学已经延长了寿命，但对我们的生命期(人类生命可能达到的最长时间)几平很少或根本没有影响。
Lee and colleagues, who published their findings in the journal Science, found that adding zinc, titanium or aluminum to a length of spider silk made it more resistant to breaking or deforming.
Lee和同事们在期刊《自然》上发表了他们的发现。他们发现将锌，钛或铝加入一段蜘蛛丝中会让其更难以断裂或变形。
Lee and colleagues, who published their findings in the journal Science, found that adding zinc, titanium or aluminum to a length of spider silk made it more resistant to breaking or deforming.
Lee和同事们在期刊《自然》上发表了他们的发现。他们发现将锌，钛或铝加入一段蜘蛛丝中会让其更难以断裂或变形。
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