double image signals double-image signals echo signals ghost signal
Related Translations:
影: Ⅰ名词1.(物体挡住光线后映出的形象) shadow 短语和例子树影 shadow of a tree; 树投影于草地上。 the tree projects a shadow on the grass.2.(镜中、水面等反映出来的物体形象) reflection; image 短语和例子倒影 inverted image; 湖光塔影 a lake with the ref
