n.豐富；改進(jìn)；濃縮

The American language owes much to its writers for its enrichment. 美國文字經(jīng)過作家們的努力已得到極大的豐富。

It could even be at Natanz, Iran's enrichment plant, says Meier. 雙方宣稱阿聯(lián)酋將放棄鈾濃縮并簽署該議定書。

Iran has revealed it has a second uranium enrichment plan. 伊朗透露已擁有第二個(gè)鈾濃縮計(jì)劃。