Delta
01
デルタ, 河口
a landform at a river's mouth, shaped by sediment deposition and characterized by distributaries
例
The river gradually formed a delta as it reached the open sea.
川は開けた海に達するにつれて、徐々にデルタを形成しました。
02
デルタ
the 4th letter of the Greek alphabet
03
デルタ, 正三角形
an object shaped like an equilateral triangle
