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 have a call to make.
我需要打个电话。
Where the sun enterd, the doctor does not.
阳光照耀处，医生就不需。
No, I didn't do that either. I just washed it in cold water.
不，我也没有那样做。我就是用冷水洗的。