acharnement

Fierce determination; relentless persistence; ferocity; doggedness

1. His acharnement in pursuing his goals was both admirable and frightening.
   他追求目标的执着既令人钦佩又令人畏惧。
2. The prosecutor attacked the defendant with acharnement.
   检察官以凶狠的态度攻击被告。
3. She approached her studies with an acharnement that surprised her teachers.
   她以一种令老师惊讶的执着态度对待学习。