be perfectly clear at the first glance;can see (/know/get) sth at a glance;can see with half an eye ❍ ～，他是个勤劳的工人。You can see with half an eye that he is a diligent worker. ❍ 他大概有四十岁了，身材魁梧，举止威严，～是颐指气使惯了的“大亨”。(茅盾《子夜》4)About forty,powerfully built and imposing,he struck you at once as a solid and prosperous businessman,accustomed to giving orders.