The firefighters were undaunted by the dangerous conditions they faced.这些消防员面临危险处境毫不畏缩。The soldier showed undaunted courage.士兵表现出大无畏的勇气。The policy changes she wants have not happened, but Banyan remains undaunted.期望中的政策变化没能实现，但班扬仍旧不屈不挠。She was undaunted in her ambition to study physics.她研究物理的志向百折不回。