be a thing of the pastEXISTto no longer exist or happen 成为过去,成为历史 Before AIDS, many health care experts believed that large-scale infectious diseases were a thing of the past. 在艾滋病出现之前,很多卫生保健专家认为大规模的传染病已成为历史。
be a thing of the past• Life-long employment with a single company is a thing of the past.• Otherwise, Tucsonans should merely leave the bees alone, and the scared news stories will probably be things of the past.
→ be a thing of the past at thing(10)