求翻译：这几天，校园里充满了唱校歌的声音，以前，广播里放时，还不知道是什么革命歌曲，让人亢奋。后来我们班也唱起来了，才知道这天天放得是校歌，当自己唱了之后才发现这首歌还不错。是什么意思？

These days, the campus is full of voices singing the school song, before the radio is playing, do not know what is revolutionary songs, people excited. Later, also in our class singing, and know that every day there was not a song, if only to find themselves singing the song is not bad.

Over the past few days, campus was filled with singing voices, broadcasting, and put in the past, when it is not yet known what revolutionary songs, let people excited. Later, we also started singing on every day, before they know it is a school song, When I found myself singing This song is pretty

These days, in the campus filled sang the school song sound, before, when in the broadcast put, but also did not know was any revolutionary song, let the human be stimulated.Afterwards our class also sang, only then knew this put is daily a school song, after own sang only then discovered this first

These days, the campus is filled with voices singing the school song, previously, when the radio, is not yet known what kind of revolutionary songs, people very excited now. Later we sang until the day it is the school song, discovered only after when he sang the song well.

正在翻译，请等待...