11.There's a mound of business letters on my desk for me to deal with. (喻)
我的办公桌放了一大堆商务信函要我处理。
12.The explorers climbed a mound to survey the land around them.
勘探者爬丘去勘测周围的地。
13.Villagers in the Mexican state of Veracruz discovered the tablet sometime before 1999, while quarrying an ancient Olmec mound for road-building material.