have a maggot in one's head; have a rat in a garret

1. 如果你認(rèn)為一下子就能學(xué)會(huì)花樣溜冰，那你就是想入非非了。
   If you think you can learn to figure skate in one lesson, you're off your trolley.
2. 他好想入非非，覺得自己贏了一塊金牌。
   He liked to fantasize that he had won a gold medal.
3. 他的妻子瓊是一個(gè)健壯、淺薄的女人，也是孩子們隨和的母親。當(dāng)她一聽說自己高貴的地位時(shí)，便立刻想入非非，暗自打算為她的年輕漂亮的女兒找一個(gè)顯赫、門當(dāng)戶對(duì)的婆家。
   And no sooner had Joan, his handsome, shallow-minded wife, the easy-going mother of his many children, heard of her exalted estate than her romantic soul began secretly to devise a brilliant and fitting alliance for her beautiful young daughter.

想的英語翻譯：

入的英語翻譯：

非的英語翻譯：