Dsf
abbr. 色散移位光纤（Dispersion Shifted Fiber）；个人金融理财业务（direct sales force）
🗣️ 情景例句
I need some.
我确实需要。
I told you so!
你看吧！
I agree with you. We've got to do something about pollution. It's getting worse.
我同意你的看法。我们得对污染采取措施了。污染越来越严重了。