cheern.欢呼声；喝彩声；(拉拉队的)加油歌；
v.欢呼；喝彩；加油；
cheer up使...高兴/振奋起来
There was a cheer when it was realized that everyone was safely back.
人们意识到大家都已平安归来的时候便发出了一阵欢呼声。
Oh, come on ─ cheer up!
噢，得了，高兴起来吧！
The crowd cheered the President as he drove slowly by.
当总统的车缓缓经过时，群众向他欢呼致意。
