When the bed load round the cylinder with water flow, a region of non sediment's moving will be formed in the bed layer near the cylinder.

试验发现推移质泥沙随水流绕过圆柱体时，将在圆柱周围的床面上形成一个无沙区。

youdao

The remaining 19 were asked to submerge their non-dominant hand into a bucket of warm water for 90 seconds, while moving paper clips one at a time between two boxes, to keep up the illusion of the task being related to physical capabilities.

ECONOMIST: Religion got it right: pain seems to assuage guilt