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- By comparison, the bottlenose dolphin has extremely keen vision in water. 淡水海豚眼睛的位置经常在游泳或进食时在一边或倒着，表明他们有前面或下面的立体视觉。
- Having keen vision. 目光锐利的
- Any of various large diurnal birds of prey of the family Accipitridae, including members of the genera Aquila and Haliaeetus, characterized by a powerful hooked bill, keen vision, long broad wings, and strong, soaring flight. 鹰一种日间活动的鹰科大猛禽，包括雕属和海雕属的成员，其特征为有力的钩形喙，敏锐的视觉、长而宽的翅膀，强劲高远的飞行
- I'm very keen on outdoor sports. 我非常喜欢室外运动。
- I can not deny my keen anticipation of her visit. 我不能否认我热切期待她的来访。
- I'm not all that keen on baseball. 我根本就不喜欢棒球。
- He's very keen to see his home town. 他极渴望看到他的故乡。
- It came within my range of vision. 该物体进入了我的视野。
- The blind have a keen sense of touch. 盲人有敏锐的触觉。
- We need someone with real vision to lead the party. 我们需要具有真知灼见的人来领导这个党。
- Not both the artists have a keen eye for beauty. 这两位艺术家并非都有审美的眼光。
- The ship came within range of vision. 已经看得见那条船了。
- I am very keen on outdoor sports. 我非常喜欢室外运动。
- How do you cope with the problem of poor vision? 怎样解决视力不好这一难题呢?
- He is keen as mustard in his work. 他对自己的工作非常着迷。
- She's keen to get ahead in her career. 她热望在事业上出人头地。
- The children are mad keen to go to the zoo. 孩子们非常想去动物园。
- Our field of vision is limited by that tall building. 我们的视野受到了那座高层建筑物的限制。
- An organ of vision or of light sensitivity. 眼睛感受视觉或光觉的器官
- Mrs Hill is keen on Tom's marrying Susan. 希尔太太很希望汤姆能和苏珊结婚。
