比较级
最高级
a challenge to do something dangerous or foolhardy
同义词:dare
the trait of being willing to undertake things that involve risk or danger
同义词:boldness / hardiness / hardihood
disposed to venture or take risks
同义词:audacious / venturesome / venturous
radically new or original
同义词:avant-garde
大胆的,勇敢的
bold / game / brave
胆量,勇气
courage / nerve / heart