三峡水库坝下航道有8处重点浅滩和7处一般碍航浅滩。
There are 8 key shoals and 7 normal shoals at downstream of the dam of the Three Gorges Reservoir.
界牌河段是长江中下游防洪的重要河段，亦是长江中下游著名的碍航河段。
The Jiepai reach in the middle and lower Yangtze River is not only an important one for its flood control. but it is also well known for its hindering navigation.
三峡工程施工期变动回水区河段由于水位变化，使部分河段碍航情况加剧。
During the construction of Three Gorges Project, in some part of the river, due to the change of water level in fluctuating backwater area, the difficulty of navigation is intensified.
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