大阴渠确有八尺宽七尺高。
The Grand Sewer is, in fact, eight feet wide and seven feet high.
这么陡的山上，居然还有这么宽的一条渠？
On such steep mountains, how could they build such a wide canal?
提出整治工程漫顶溢流时溢流量按宽顶堰或短渠计算；
The text introduces the calculation of overfalling quantity should be based on broad crested weir or short canal when renovating overtopping flooding.
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