adj.反向的；倒轉(zhuǎn)的
動(dòng)詞invert的過去式和過去分詞.
The collector's heart stood still as he saw that the sheet which had been offered him had inverted centers. 當(dāng)這個(gè)集郵者看到郵票時(shí)他的心跳剎那間停頓了，給他的這版郵票有一個(gè)倒轉(zhuǎn)的中心。
