6 ?3 i% _: S8 |5 W1 D" P8 Z& ]Meaning: Tendency to think about only one subject% ]5 B) d- l* G. O& k
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Example / u9 v) L- x* Q* `9 b - j8 `0 g6 L( B7 b/ t' LMy son has a one -track mind these days. He thinks only about cars.