Etf
abbr. 交易型开放式指数基金（Exchange Traded Fund）；发动机试验设备（Engine Test Facilities）
🗣️ 情景例句
I remember.
我记起来啦。
He took two weeks off in August.
他在八月份休假两星期。
and are capable of a considerable degree of personal affection.
而且会对主人产生相当深厚的私人感情。