| 词汇 | concentration |
| 词根词缀 | 词源： 1630s, "action of bringing to a center," noun of action from verb concentrate (q.v.). Meaning "a mass so collected" is from 1670s; "continuous focus of mental activity" is from 1846. 词根记忆： n. 专心,专注;集中,集结;浓度This test will need all your concentration.这个测试需要全神贯注才能读懂. 集中;浓缩[centr=center,表示"中心"] 词根词缀： concentration concentration集中,浓缩 centr=center,表示”中心”central中心的acentric无中心的centripetal向心的(centri+pet追+al=追求中心的=向心的) concentrate集中,浓缩concentration集中,浓缩concentric同心的,集中的(con共同+centric=同中心的) |
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