Sef
abbr. 海峡交流基金会（Straits Exchange Foundation）；严重误码帧（ Severely Errored Frame）；钠排泄因子（sodium excreting factor ）
🗣️ 情景例句
We talked about that earlier.
我们先前谈过这个问题。
And our successful techniques, and to speak about our failures.
和成功技巧，并讲出我们的失败之处。
I was thinking about next Tuesday.
我想下个礼拜二。