n.土堆，土丘；堆；[考古学] 坟墩；[棒球] 投球区土墩 变形： 复数：mounds 双语释义：n.(名词)[C]土堆;土丘 a pile of earth,stones,etc. often one built in ancient times as a defence or over a grave;small hill[C]一大堆 a large pile英英释义： mound[ maund ]n.(baseball) the slight elevation on which the pitch