Igy
abbr. 国际地球物理年（International Geophysical Year）
🗣️ 情景例句
He has an old head on young shoulders.
他年轻又有见识。
How many feet are you going to use?
你要用几英尺？
The enormous increase of population will create many problems.
巨大的人口增长将产生很多问题。