If you describe someone's judgment or ability as unerring, you mean that they are always correct and never mistaken.
例句
These designs demonstrate her unerring eye for colour and detail...这些设计体现了她对颜色和细节的精准眼光。Paul is a thoroughly likeable man with an unerring sense of comedy...保罗十分讨人喜欢,开玩笑时很有分寸。
英汉词典释义
adj.
准确无误的;无偏差的
He had an unerring instinct for when people were lying to him.他具有准确的直觉,能判断别人什么时候是在说谎。
一贯正确的;可靠的
adv.
英英词典释义
Adjective
1. not liable to error;
"the Church was...theoretically inerrant and omnicompetent"-G.G.Coulton"lack an inerrant literary sense""an unerring marksman"