在东亚和南亚，大江的洪积平原一直是多数人口和经济活动的家园。

In South and East Asia the floodplains of great rivers have always been home to vast Numbers of people and much economic activity.

youdao

就洪积土壤来说，其与大骨节病分布的关系似乎与土壤质地有一定的联系，底部砾石含量高的土壤多集中在大骨节病地区。

For diluvial soils, KBD distribution was probably related with soil texture. Soils with high content of gravel in bottom layer are mostly concentrated on KBD affected area.

youdao

第1级麓原面（P1）的前缘陡坎为最新断层崖或洪积台地，断层崖的坡脚为断裂带地表出露位置；

The frontal riser of the first pediment surface (P1) is the most recent fault scarp or diluvial platform; at the foot of pediment P1 outcrops the fault.

youdao