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
Although we hadn't met for 25 years, I recognized him the minute I saw him.
尽管我们有25年未见面了，我一看见他就认出来了。
Let every man praise the bridge he goes over.
饮水思源。
Quick, turn the gas off. Cover the pan. Be careful!
快，把煤气关上。盖上锅。小心！