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 think you're doing the right thing. Taking your time.
我觉得你们做得对。慢慢来。
Our first bill came yesterday, and we have some questions.
我们昨天收到的第一张帐单，有一些问题。
It is more important to be healthy than bony slim.
健康永远比皮包骨头好。