Hillen.希勒hilln.小山；丘陵；山冈；斜坡vt.堆起；培土hill - climing algorithm爬山算法Hills along the river city沿江丘陵城市Hills melt into the sky.群山渐渐没入天际。hills shrouded in darkness黑暗中隐约可见的山峦hill closed and afforested封育hill differential equation希耳微分方程Hills are folded in mist.群山为雾所笼罩。hill-and-dale recording深划录音,垂直录声,竖向录音Hill's posterior gastropexyhills covered with pinetrees青松覆盖的山峦