例句-1: I'm afraid my brother Johnny has a real one track mind. All he ever seems to think about is getting all dressed up and going out to chase the girls.
例句-2: I told Jack not to pour all his money into one single stock. But having a one track mind, he didn't even pay attention to what I said. Now he has suffered a heavy loss because the price of the stock he bought has dropped.
例句-3: We're lucky. This year we have two people with good track records running for Congress. It's hard to make up my mind, but I think I'll vote for Ms. Green because her track record is a little more impressive.
例句-4: Barry had been D.C.'s mayor for 12 years before he was put into prison for involvement with drugs in 1990. This time he was elected again. I just don't understand why people voted for him. He simply doesn't have a good track record.