One-Tack Mind ' a2 b; s5 @6 F* o5 | b1 t5 X6 e* {8 W1 U( B# k& a5 D9 I
Meaning: Tendency to think about only one subject% s$ ^) v: T4 I1 m
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My son has a one -track mind these days. He thinks only about cars.