But the new efforts have yet to be proved, and it would take some years to scale them up to a meaningful level.
但新举措的效果还有待证明，尚需要几年的时间将这些措施扩展至能产生切实作用的水平。
This inference based on the records of the seasonal signal in atmospheric co 2, the surface air temperature and the satellite data have yet to be proved by field observation data of land vegetation.
这一根据大气二氧化碳浓度季节变化、陆地年平均气温和卫星遥感数据的推断，尚有待于利用对地面植被的实际观测资料予以检验。
This inference based on the records of the seasonal signal in atmospheric co 2, the surface air temperature and the satellite data have yet to be proved by field observation data of land vegetation.
这一根据大气二氧化碳浓度季节变化、陆地年平均气温和卫星遥感数据的推断，尚有待于利用对地面植被的实际观测资料予以检验。
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