例：
He felt homesick, but made a brave attempt to appear cheerful.
他很想家，但却竭力表现得很高兴。
She's had a lot of problems since her husband died but she seems quite cheerful, all things considered.
自从丈夫死后，她面临很多困难，但总的.来说她看上去情绪还是挺乐观的。
We found a cheap and cheerful cafe.
我们找到了一家价格低廉、环境宜人的咖啡馆。
He's changed since he came back — he seems positively cheerful
他回来后变了个样，看起来确实很高兴。
There is little evidence to support many of Mr Will's cheerful assumptions.
没有多少证据能支持威尔先生的那些乐观设想。
I am happy and free, in good health, gay and cheerful.
我快活自由，身体健康，积极乐观。