aerogram m充气照片;无线电报;充气造影照片
international aerogram国际航空邮简
aerogram bladder膀胱充气造影
aerogram of the bladder膀胱充气造影
air letter aerogram航空邮简
N(名词) an airmail letter written on a single sheet of lightweight paper that folds and is sealed to form an envelope 无线电报 (Also called air letter)