Ifo
abbr. 已识别的飞行物（identified flying object）
🗣️ 情景例句
The economy is booming in this country.
这个国家的经济形势一片大好。
What's wrong now?
现在又怎么了。
For a long time.I watched them scurrying around the base of the tree in bewilderment.
在很长一段时间里，我看见蚂蚁围着大树底部来回转悠，不知所措。