BIFOCALS in a Sentence

Learn BIFOCALS from example sentences, some of them are from classic books. The app collects 40,000 words and 300,000 sentences. Input your word, you get not only its meaning and example, but also some sentences' contexts in classic literature.

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 Meanings and Examples of BIFOCALS
Definition Example Sentence Classic Sentence
 n.  eyeglasses having two focal lengths, one for near vision and the other for far vision
Classic Sentence:
Example Sentence: