But,the enthusiasm is tempered by concerns that reckless behavior might lead to further spread of HIV.

VOA: standard.2010.05.29

but people are shorter-tempered, but just seem more irritable

但是人们脾气更暴躁，更容易发怒。

加州的天气 - SpeakingMax英语口语达人

But tragically Mr Mandela's joy was severely tempered by the death of his 13-year-old great-granddaughter Zenani Mandela as she was traveling home from the concert.

VOA: standard.2010.06.11