Sea walls collapsed, and low-lying areas were flooded.

海堤溃决，海水淹没了低洼地区。

《柯林斯英汉双解大词典》

Buildings in the low-lying areas were immersed in water.

洼地里的建筑浸泡在水中。

youdao

Residents in Oregon and northern California have been advised to evacuate low-lying areas.

俄勒冈和加利福尼亚州北部的居民已被告知撤离低洼地区。

youdao

You might have to stay away from low-lying areas for as long as twenty hours after the first warning.

VOA: special.2011.06.07

As you know, some of the camps are in the low lying areas and the most flood-prone districts are Swabi, Mardan,Nowshera and Peshawar.

VOA: standard.2009.07.04

They are the nurseries of the ocean, where many species of fish and shrimp breed and serve as a buffer against coastal erosion in a region where much of the population livesin low-lying areas.

VOA: standard.2010.03.29

Environment Agency officials told residents in low-lying areas or near flood-prone areas to watch water levels.

BBC: Environment Agency warns of possible further flooding

If things have improved today, people can actually get down in to the lower lying areas.

NPR: Hurricanes Wreak Havoc In Haiti And Cuba

He said the city had positioned rescue crews in low-lying areas where some flooding was anticipated.

WSJ: Officials Urge Caution as Snow Starts Falling