That crack is typical of deltas.

那道裂缝是三角洲的典型特征。

Environmental changes are affecting the deltas around the world.

环境变化正在影响世界各地的三角洲。

Many ancient civilizations thrived in the fertile deltas of rivers.

许多古代文明在河流的肥沃三角洲中繁荣发展。

The Nile delta is one of the most famous deltas in the world.

尼罗河三角洲是世界上最著名的三角洲之一。

The deltas are crucial for agriculture due to their rich soil.

三角洲因其肥沃的土壤对农业至关重要。

The Nile River forms one of the most famous deltas in the world.

尼罗河形成了世界上最著名的三角洲之一。

The Mississippi River has one of the largest deltas in the United States.

密西西比河拥有美国最大的三角洲之一。

Patterns of deltas are ephemeral .

三角洲式样的变化是很快的。

River deltas are difficult places for map makers.

河流三角洲的绘制对于地图编制者是很困难的.

There are three deltaic types developed in lacustrine strata i. e. normal braid and fan deltas which consist of delta plain delta front and front delta.

摘要在湖泊中存在三种三角洲类型，即正常三角洲，辫状三角洲和扇三角洲。