contribute  (v.) give support (often money)捐献

[例]  We contributed to the charity fund.

[同义词]  supply, furnish, provide

contribution  (n.) amount of support or money given贡献

[同义词]  donation

conversion (n.) process of changing inputs into finished products（投入）转化（为产品）

[例] Finally we made a conversion of raw materials into finished products.

[同义词]  transformation, transfiguration, alteration

convertible currency (n) money that can be exchanged for the currency of another country 可自由兑换货币

[例] Till now , RMB is not a convertible currency.

copy (n.) text specially written for an advertisement or a brochure（广告）解说词

[例]  The copy for the brochure needs some revision in wording.