run up against
Intermédiaire supérieur (B2) neutral
To suddenly find a big problem or person blocking what you're trying to do
"The reform project ran up against fierce resistance from senior management."
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How artificial intelligence is reshaping college for students and professors
PBS NewsHour · 7:56
run up against or that their
Line Goes Up – The Problem With NFTs
Folding Ideas · 122:35
run up against a complication that the coders didn’t consider?