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1·Levees normally hold back the water, preventing floods.

防洪大堤通常用来预防洪水。

2·Even before the levees broke the schools were struggling, as the city was.

甚至在堤坝被毁以前，学校就已经运作艰难了，这座城市也一样。

3·As the Erie Canal was losing business, some of its levees began to break.

由于伊利运河逐渐失去生意，有些防洪大堤开始破裂。

4·Levees protecting the delta at themouth of the river are in bad shape, too.

在河流入口处保护三角洲的堤岸也处于危险之中。

5·Levees protecting the delta at the mouth of the river are in bad shape, too.

在河流入口处保护三角洲的堤岸也处于危险之中。

6·Levee double - layer foundation is very common in levees along large rivers.

双层堤基在大江大河防洪干堤中非常普遍。

7·But these words do not: flood, drought, hurricane, rising sea levels, bursting levees.

但是洪水、干旱、飓风、海平面上升、堤坝断裂这些词汇却令人惧怕。

8·The lowest of those levees were built to withstand a one-in-1,000-year tidal surge.

这些防洪大堤中最低的那些堤坝被建设来承受千年一次的潮汐波浪。

9·To defend Shanghai, engineers have stretched hundreds of miles of levees along its rivers.

为了保卫上海，工程师们已经沿着其河流延伸了几百英里长的防洪大堤。

10·Fine - grained clay may settle out in the sheltered bays on the outer sides of the levees.

细粒粘土可以沉积在天然堤外侧的隐蔽湾中。

防洪堤

1·Five years ago this Sunday Hurricane Katrina struck the Gulf coast area and caused massive flooding in New Orleans after levees there failed to protect the low-lying city.

五年前的8月29日，卡特里娜飓风袭击了美国墨西哥湾沿岸地区，冲垮了防洪堤，使新奥尔良市大片地区被淹。

2·Authorities are keeping a close eye on levees.

官方正在密切关注防洪堤的状况。

3·In the San Francisco Bay area, planners are considering increasing the height of the seawall on the city's waterfront and the levees at the San Francisco and Oakland airports.

在旧金山湾区，规划者们正考虑增加海滨海堤和旧金山、奥克兰机场防洪堤的高度。

4·In addition to the overall work to stop the flow itself, other efforts have included burning off oil, using chemical dispersants, and building booms and levees.

除了总体工作停止流通本身，其他努力包括烧毁油，使用化学分散剂，建设水栅和防洪堤。

5·New buildings include Public Transportation, Industrial Parks, and Levees.

新建筑包括公交系统、工业园、防洪堤。

(1)natural levee天然堤，天然堤岸；自然堤