( G8 K3 a% g2 I; a$ kMeaning: Tendency to think about only one subject 6 u v7 b( y+ _3 n* R- A3 t/ V2 s 8 \% U/ G* X; |% p8 q( G" ~. e- DExample. Y; g6 s T& l. q K# c- {) N
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My son has a one -track mind these days. He thinks only about cars.