em.i.grate 5em7I7greIt v [I] to leave a country permanently and go to live in another one 移居，移民(外国) Millions of Germans emigrated from Europe to America in the nineteenth century. 19世纪数百万德国人从欧洲移民美国。 How long ago did your parents emigrate? 你父母多久以前移居外国的?