levees是什么意思,levees怎么读,
natural levee天然堤,天然堤岸;自然堤
1.The sides of the flow can also cool faster than the center, leading to the formation of wall-like structures known as flow levees (image center).
熔岩流的边界比中心冷却得更快,形成了被称为流堤(图片中心位置)的似墙的结构。
2.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。
3.Most of the storm's casualties occurred in southeast Louisiana, where flooding washed away many of the levees protecting the area.
风暴中大多数人员伤亡发生在路易斯安那东南部,因为洪水冲走了许多保护这个地区的堤坝。
4.Tractors are tilling the land and building earthen rows that will serve as levees once water flows into these fields.
拖拉机在耕地,并且建起一道道田埂,等水流进这些农田时,这些田埂就能起到河堤的作用。