1. 可数名词：欢呼声，喝彩声
2. 可数名词：(拉拉队队长的）加油歌，加油诗
3. 不可数名词：欢乐或幸福的气氛
v.
1.[T,I]欢呼，喝彩，加油
2. 及物动词：鼓励，鼓舞 词形变化
- 形容词 cheerful
- 副词 cheeringly
- 名称 cheerer
- 时态 cheered，cheering，cheers
- cause (somebody) to feel happier or more cheerful
- give encouragement to
- show approval or good wishes by shouting
- urge on or encourage especially by shouts
- a cry or shout of approval
- the quality of being cheerful and dispelling gloom
- become cheerful