aplomb
noun /əˈplɒm/
/əˈplɑːm/
[uncountable] (formal)- if somebody does something with aplomb, they do it in a confident and successful way, often in a difficult situation
镇定；沉着；泰然自若 - with considerable/great/remarkable aplomb
相当的／十分的／非凡的镇定 - He delivered the speech with his usual aplomb.
他以惯常的沉着语气作了演讲。 - She concealed the problem with remarkable aplomb.
她泰然自若地隐瞒了这个问题。
词源late 18th cent. (in the sense ‘perpendicularity, steadiness’): from French, from à plomb ‘according to a plumb line’. - with considerable/great/remarkable aplomb