Interchangeable File Format, removable, to change, to convert, to exchange
định dạng tệp có thể trao đổi
to change the position of, to convert, to exchange, to renew, to replace
thay đổi vị trí
switching center, to change, to change over, to convert, to exchange, to renew, to replace, to switch, to switch over, to throw a switch, transform
trung tâm chuyển đổi