Fsi
abbr. 外事协会（Foreign Service Institute）；故障征兆指数（Fault Symptom Index）；国外科学情报（Foreign Science Information）；自由膨胀指数（Free Swelling Index）
🗣️ 情景例句
I still live with my parents.
我还和父母同住。
Finally, we came to an agreement.
最后我们达成了一致。
I am used to traveling by air and only on one occasion have I ever felt frightened.
我习惯了乘飞机旅行，只是有一次把我吓坏了。