Fsfi
n. Free Space Fragmentation Index （自由空间碎片索引）
🗣️ 情景例句
Go inside the Information Center.
到服务中心去。
I went to see my doctor for a check-up yesterday.
我昨天为检查去看了医生。
Can't you see? Look! It has an egg in it.
你没看见吗？瞧！里面有一只蛋。