1、But aides say they detect a bit of wistfulness in his voice.
不過，他的助手們說，他們察覺到布什的語氣中有一絲。

2、It is thus with a certain wistfulness that some South Africans contemplate a post-Mandela era.
因而一些南非人開始憂慮和沉思一個后曼德拉時期。

3、They detect a bit of wistfulness in his voice.
他們察覺出布什的說話聲中帶有一絲傷感。