One-Tack Mind 9 r- L; H- c5 K/ M( | + A" B: y0 @4 [3 c# B/ iMeaning: Tendency to think about only one subject! P$ ?4 n" J* Q9 C, S2 U @
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Example % q/ L/ Q; M+ Z , A- q/ f3 q6 r7 E6 P* J& kMy son has a one -track mind these days. He thinks only about cars.