【用戶】小王子
【年級】研一上
【評論內容】將就用牛的來看http://static.wixstatic.com/media/fb20e1_71640db0aa8940cb991814f869396054.jpghttp://essenger.info/wp-content/uploads/2017/12/group-b-lab-mammary-gland-anatomy-of-cattle-udder-showing-arteries-branches-anatomy-of-mammary-gland-of-cow-ppt-mammary-gland-anatomy-cow.jpg