【月读】五岳柳日月读寂静整理 （共55更新于5月30日00:20)考古魔法和安置，55新狗 【结贴】

hfyecho

dddddddddddddddddddddddddd

labixiaobao100

跪谢啊。。。。

fanofkaka

This problem has occurred within the Grand Canyon below Glen Canyon Dam. After the construction of the dam was completed in 1963, erosion of the sediment along the beaches began because of the lack of incoming sediment. By the early 1990's, many beaches were in danger of disappearing. In the spring of 1996, an experimental controlled flood of the river below Glen Canyon Dam was undertaken to attempt to redistribute existing sediments along the sides of the channel. While many of the beaches were temporarily rebuilt, this redistribution of sediments was short lived. Research on this issue is continuing, however, the fundamental problem of the lack of input sediment for the river downstream of the dam remains unresolved.

第一篇阅读又找到些段落

kiraasume

頂了!!!!!!!!!!!!!!!!!!!!!

hanyajing

thankssssssssssssssssssssss

给我一只小魔杖

多谢咯铺筑

hzxshelen

大家一起加油哦！！

眷恋花香

额！！昨天的还没有看，今天又多了好几个

bmulb2002

下周考试，开始学习

范范范范小安

good〜〜〜〜〜〜〜