{"etf":{"definition":"n a mutual fund that is traded on a stock exchange","translation":"abbr. 交易型开放式指数基金（Exchange Traded Fund）；发动机试验设备（Engine Test Facilities）","word":"etf"},"etfe":{"translation":"[医][=ethylene-tetrafluoro-ethylene]乙烯四氟乙烯","word":"etfe"},"etfs":{"translation":"abbr. ECM (electronic countermeasure) transmitter frequency setup 电子对抗发射机频率调定; ECM transmitter frequency setup 电子对抗发射机频率调定","word":"etfs"}}