Break the tension with smiles and humor to reinforce the idea that this is friendly discourse and that all are working toward a common goal.
2015年12月四級真題（第二套）閱讀 Section C
英語六級真題
An analysis of car sales in Germany found that cars with gills that were upturned like smiles sold best.
2019年12月六級真題（第三套）閱讀 Section A
柯林斯高階英漢雙解學習詞典釋義
VERB
微笑;笑
When you smile, the corners of your mouth curve up and you sometimes show your teeth. People smile when they are pleased or amused, or when they are being friendly.