vt.约略显示，勾画出…的轮廓

n.预示；预兆；遮蔽；遮暗

网络解释.预示；画轮廓；隐约预示；画出轮廓
词形变化:
过去式：adumbrated   过去式：adumbrated   过去式：adumbrating   过去式：adumbrates  
派生词: adumbration   adumbrative