undeterred
adjective uk/ˌʌn.dɪˈtɜːd/ us/ˌʌn.dɪˈtɝːd/
未被吓住的；不灰心丧气的
still continuing to do something or enthusiastic about doing it despite a bad situation
After four years of injury problems, Thomas remains undeterred. 在受伤四年之后，托马斯依然没有灰心丧气。