adj.全神貫注的；濃縮的；密集的

動(dòng)詞concentrate的過(guò)去式和過(guò)去分詞.

He made a concentrated effort to improve his work. 他全神貫注地努力改進(jìn)自己的工作。

She diluted the concentrated fruit juice with water. 她攙水沖淡濃縮水果汁。

The presidential palace has been hit again by concentrated artillery fire. 總統(tǒng)府又遭到密集炮火的攻擊。