1. 敏锐的；有洞察力的
Someone who is perspicacious notices, realizes, and understands things quickly.
1. mentally acute or penetratingly discerning
e.g. too clear-eyed not to see what problems would follow
chaos could be prevented only by clear-sighted leadership
much too perspicacious to be taken in by so spurious an argument
Synonym: clear-eyedclear-sighted
2. acutely insightful and wise
e.g. much too perspicacious to be taken in by such a spurious argument
observant and thoughtful, he was given to asking sagacious questions
a source of valuable insights and sapient advice to educators