car sill[车辆] 轿厢地坎
Floor Sill[矿业] 木底座;地面门坎;钻台底梁;木底座
side sill侧梁;下纵梁;门槛安装支架;车身门槛
mud sill下槛;泥槛;排架座木;底梁
ground sill地槛;床栏
main sill纵梁;钻台主基木;纵梁垫木
sill anchor槛锚;地脚螺栓
sill stop地坎挡块
sill edge地坎边缘
N-COUNT（可数名词） A sill is a shelf along the bottom edge of a window, either inside or outside a building. 窗台
Whitlock was perched on the sill of the room's only window.
惠特洛克栖息在房里惟一窗子的窗台上。