Pronunciation: rʌn ʌp əˈɡɛnst;əˈɡeɪnst
Parts of Speech: phrasal verb
run up against someone/something if you run up against problems, difficulties etc, you have to deal with them
Definition: Meaning of, focal length in English to Arabic dictionary.
Pronunciation: / ˈfəʊk(ə)l lɛŋ(k)θ;lɛn(t)θ /
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| [countable] [technical] |