input := input.trim();
3月24日，北京市少年宫，学生科技节优秀获奖作品展上，北京市育英学校的学生在展示校园环境智能导览系统。新京报记者 李木易 摄，更多细节参见wps
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Easing the windfall tax on the North Sea would do nothing for hard-pressed consumers, and merely fatten the profits of oil and gas companies, economists and experts have told the Guardian.