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
You'll receive my invitation soon enough, and I will inform you.
你很快会收到我的请柬，我会通知你的。
He applied for a scholarship at Harvard University.
他申请了哈佛的奖学金。
If, as has been reported, they have protected humans from sharks,
正如报道中所说，如果海豚保护人不受鲨鱼侵害，