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
Where did you get such a nice tan?
你到哪把皮肤晒成棕色的？
Friendship the older it grows the stronger it is.
友谊地久天长。
I learnt that I had passed the test.
我获悉我测验及格了。