Word
bifocals
双光眼镜
核心释义
eyeglasses having two focal lengths, one for near vision and the other for far vision
- 1.
具有两种不同度数矫正镜片的眼镜；用于需要远用和近用镜片的人。
Spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses.
具有两种不同度数矫正镜片的眼镜；用于需要远用和近用镜片的人。
用法In use
My grandfather wears bifocals to read and to see the road clearly.
用法提示：名词复数形式，指一副具有两种焦距的眼镜。
After turning forty, she realized she needed bifocals for both close work and distance vision.
用法提示：名词，指这种能同时矫正近视和远视的眼镜。
The optician adjusted the bifocals so they would sit comfortably on his nose.
用法提示：名词，用复数形式表示一副眼镜。
a pair of bifocals
bifocals 是复数形式名词，不能用 a bifocal 表示单数。
He needs a new pair of bifocals.
他需要一副新的双光眼镜。
wear bifocals
相关词与表达Connections
搭配Collocations
- wear bifocals
- 戴双光眼镜
- My grandfather has worn bifocals for years.我祖父戴双光眼镜已经很多年了。
- a pair of bifocals
- 一副双光眼镜
- She bought a new pair of bifocals at the optician's.她在眼镜店买了一副新的双光眼镜。
- prescription bifocals
- 验光配制的双光眼镜
- These prescription bifocals are designed for both reading and distance.这副验光配制的双光眼镜是为阅读和远视两用设计的。
- reading bifocals
- 阅读用双光眼镜
- He uses reading bifocals at his desk.他在办公桌前使用阅读用双光眼镜。
学习提示Learner notes
记忆技巧Memory Tip
bifocals 拆成 bi（两）+ focal（焦点）：镜片上有远、近两个焦点，看远看近都清楚。
语境与语域Context & Register
语域：neutral 常见场景：配眼镜时、谈论视力问题 该词为日常通用说法，多用于配镜或视力相关话题，正式程度适中，无需特别口语化或书面化。
发音与拼写Pronunciation & Spelling
trifocals、vocals、locals、yokels 与 bifocals 押韵：它们的重读元音及之后的部分都含 /oʊkəlz/ 音（注意拼写分别是 -focals、-cals、-kels）。bicycles 是易混词：虽然也以 bi- 开头、以 -cles 结尾，但重音在第一个音节，读作 /ˈbaɪsɪkəlz/，与 bifocals 不押韵。
Dictionary facts from ECDICT, WIKTIONARY.