工程投产至今已经进入老化期，水库一直被限制蓄水带病运行，严重影响工程效益的发挥。
Project has been put into operation to enter the aging period, the reservoir water has been restricted to run sick and seriously affect the effectiveness of the play.
国内有专家认为桥梁使用超过25年以上就进入了老化期，据估计我国桥梁总数的40%左右已经属于此范畴。
Some experts believe the domestic use of the bridge more than 25 years entered the stage of aging, it is estimated that our bridge has about 40% of the total belong to this category.
古生物学家发现，在这些三千九百万年前的古老化石中，有三个特征不同的类人猿家族，它们都在同一时期生活在这一地区。
Paleontologists found that amongst the 39 million year old fossils there were three distinct families of anthropoid primates, all of whom lived in the area at approximately the same time.
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