mounds
A mound of something is a large, rounded pile of it.
The bulldozers piled up huge mounds of earth.
推土机堆起大堆大堆的土。
In baseball, the mound is the raised area where the pitcher stands when he or she throws the ball.
He went to the mound to talk with a struggling pitcher who spoke only Spanish.
他走到投球区土墩和一名正在奋力拼搏的只讲西班牙语的投手交谈。