I resolve to index data usefully.

　　我決心有效地索引數(shù)據(jù)。

　　In doing so, it can usefully learn from Europe's experience.

　　為此美國(guó)可以借鑒歐洲有益的經(jīng)驗(yàn)。

　　More counsel that the Irish could usefully have heeded earlier.

　　而愛(ài)爾蘭人們應(yīng)該在更早的時(shí)候留心這些忠告。

　　The money could be more usefully spent on new equipment.

　　這筆錢(qián)用來(lái)購(gòu)置新設(shè)備可能會(huì)更有價(jià)值。