A small, [[incised alluvial plain from Red Rock Canyon State Park (California).]]

1. The region is known for its alluvial plains, which are ideal for agriculture.
   這個地區(qū)以其沖積平原著稱，這些平原非常適合農(nóng)業(yè)種植。
2. Alluvial gold is found in riverbeds, often deposited by flowing water.
   沖積金通常存在于河床中，常常是水流沉積而成的。