clearance 清算;清除(clear+ance表名词)
clarify 澄清,弄清
clarity 清楚
clarification 澄清;纯化
edclare 宣称;断言
declaration 定言;陈述(declare+ation)
clairvoyance 透视;洞察力
clairaudient 有超人听力的(clair+audi听+ent→听力清楚)