| 词汇 | clearance |
| 词根词缀 | 词源： 1560s, "action of clearing," from clear (q.v.). Meaning "approval, permission" (esp. to land or take off an aircraft) is from 1944, Amer.Eng.; national security sense recorded from 1948; meaning "a clear space" is from 1788. 词根记忆： 清算;清除(clear+ance表名词)[clear,clar,clair=clear,bright,表示"清楚,明白"] 词根词缀： clearance clearance清算,清除(clear+ance表名词) clear, clar, clair=clear, bright,表示”清楚,明白”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) |
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