at bottom

英文解釋：

副詞 at bottom:

1. in reality
   同義詞：at heart, deep down, inside, in spite of appearance

英文造句：

1. At bottom, the question is confidence: confidence in the economy and confidence in our political leadership.
   基本上，問題在於信心：對經濟的信心以及對政治領導的信心。