1 ^5 u3 j9 j0 L4 M% cMeaning: Tendency to think about only one subject+ Q' j2 B/ w* g! n E- |* U
9 v9 T Q$ {# o2 kExample9 n7 l1 Q% h# d# r: m; [# j
/ F# E" @% ] |9 V: V$ R+ k6 Q% D5 N8 g
My son has a one -track mind these days. He thinks only about cars.