| 词汇 | bifocal |
| 释义 | bifocal adjective uk /ˌbaɪˈfəʊ.kəl/ us /ˌbaɪˈfoʊ.kəl/ used to refer to lenses that are divided into two parts. The upper half is for looking at things that are far away and the lower half is for reading or for looking at things that are near: （透镜）双焦点的 Bifocal contact lenses have now been developed.现在已开发出双焦点的隐形眼镜。 bifocal lenses双焦点镜头 See bifocals Franklin invented the bifocal lens in 1760. He wore these big bifocal glasses. I need some bifocal sunglasses. Eyesight, glasses & lenses accommodative afterimage age-related macular degeneration amaurosis amblyopia dispensing optician eyeglasses glaucoma limbus long-sighted long-sightedness macula macula lutea macular ocular oculist ophthalmology wet macular degeneration wraparounds yellow spot Examples of bifocalbifocal An interesting issue is the extent to which bifocal and varifocal spectacles might be a contributory factor in falls on stairs. If falls begin shortly after the issue of bifocal spectacles, they should be abandoned and optimal correction ensured for everyday living. The musical text is similarly bifocal. You can go and buy bifocal spectacles in the private sector for well over £100. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 If, as a consequence of not being able to get bifocal glasses there is a deterioration, then obviously bifocals ought not to have been recommended, but two pairs of glasses. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 We have bifocal vision, we have carnivore-type teeth, and we have never developed the multiple stomachs that would enable us to live off grass and to chew the cud. From the Hansard archive Example from the Hansard archive. Contains Parliamentary information licensed under the Open Parliament Licence v3.0 In a creative sense, the bifocal reward is that you are bound by neither. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. The large eyes at the front of the head provide it with the bifocal vision and depth perception it needs to catch prey. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It offers pure science as well as bifocal subjects. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This is the first ever recorded use of bifocal technology in the animal world. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is sometimes also referred to as the bifocal tensor. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. This created a giant bifocal system which allowed him to see the blackboard through the right side, then use the left side to write down what he had seen. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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