基本解释adj.吓不倒的；无畏的；大胆的同根派生 undauntable相关词英汉例句undauntable heroism; undauntable optimism. 不屈不挠的英雄主义；不容退缩的乐观主义undauntable heroism;undauntable optimism. 不屈不挠的英雄主义；不容退缩的乐观主义undauntable更多例句