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.
研究表明，在三峡船闸建成初期，可能有一定碍航故障。
The results show that there may be operation failure right after construction of Three Gorges ship lock.
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.
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