巴黎在河右岸有一处是驴背形的地势，两边都是斜坡，其中一边的污水泻入塞纳河，另一边流入总渠。
The ridge which the soil of Paris forms on its right bank empties one of its water-sheds into the Seine and the other into the Grand Sewer.
该数学模型为路、堤、渠、坝的边坡坡面设计提供了一种准确、方便、适用于数字化设计的数学模型。
The mathematical model provides a correct, convenient mathematical model which can be applied to digital design for the design of the side slope of roads, Banks, canals and DAMS.
他正在一片稻田周围挖掘一条灌溉渠，一边想着哪件工具更加有效，是锄头还是铁铲？
He was digging an irrigation ditch around a rice paddy, contemplating which tool was more effective, a hoe or a shovel.
他正在一片稻田周围挖掘一条灌溉渠，一边想着哪件工具更加有效，是锄头还是铁铲？
He was digging an irrigation ditch around a rice paddy, contemplating which tool was more effective, a hoe or a shovel.
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