tenacious
adj
1 sticking or clinging firmly together or to an object 粘牢的; 粘住的; 抓牢的; 抓紧的
The eagle seized its prey in a tenacious grip. 鹰将捕获物紧紧抓住.
2 keeping a firm hold on property, principles, life, etc; resolute 紧握的; 不放松的; 坚决的
a tenacious adversary 紧逼不放的对手
She is tenacious in defence of her rights. 她坚决维护自己的权利.
3 (of memory) retentive; not forgetting things (指记忆力)持久的, 强的; 记性好的.
Few things could be more impressive than the peace that descends on deserted city streets at weekends when the thousands that travel to work every day are tucked away in their homes in the country.