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one-track adj.1.單軌的。2.(=one-idea'd)(an...

one-up

Her one-track mind ran along the trains-siberian railway between moscow and beijing . 她的褊狹的思路順著西伯利亞鐵路往返于莫斯科和北京之間。

He is got a one-track mind -- all he ever thinks about is sex ! 他只有一個心思想的都是性事!