It is difficult to build a dam in the sea, and the cost is very high.

在海里建水坝十分困难，成本也很高。

youdao

Where damage has been identified, it has been cracking high in the dam and where additional features such as curbs, railings, gates, or guard or control houses are located.

在大坝确认收到破坏的部位，大都是在较高部位出现裂缝，那里的特点是附设有连接装置，护栏，泄水闸门，警卫室或控制室等。

youdao

The dam wall is 870 ft. (265 m) high - taller than the Hoover dam - and when completed, the dam formed a reservoir 47 miles (75 km) long that completely submerged the old town of Tehri.

大坝高870英尺(265米)——比胡弗大坝高——竣工以后，该大坝形成了一个长达47英里(75千米)的蓄水池，完全是老的特赫里城镇完全陷入水中。

youdao

Men who worked at night on the dam suffered less, but the heat was still as high as thirty degrees Celsius.

VOA: special.2009.08.12

Today,visitors can see a statue of the men who worked as high scalers to build Hoover Dam.

VOA: special.2009.08.12

Workers called "high scalers" were some of the first to begin building the dam.

VOA: special.2009.08.12

Or take the Aswan High Dam in Egypt, an unmitigated disaster, according to ecologists.

FORBES: The Story Of Eau

Built in 1837, the 24-foot high dam was used to accommodate barges and power sawmills.

CNN: Study opens floodgates on dam removal

Mr Turner said the council had also built a 1m high dam near the culvert, which had improved water flow through the area.

BBC: Divers used to investigate flood-hit A34 in Stone