On the other hand, the position of the eyes in most dolphins and porpoises suggests that they have stereoscopic vision forward and downward.
On the other hand, the position of the eyes in most dolphins and porpoises suggests that they have stereoscopic vision forward and downward.
另一方面，大多数还腿和数海豚的眼睛位置标明他们有前面和下面的立体视觉。