Your time could be usefully employed in attending night classes.

你的时间可以被有效地利用来上夜课。

《柯林斯英汉双解大词典》

Your time could be usefully employed in attending to professional matters.

你可以有效地利用时间处理一些专业问题。

youdao

This idiom may even be usefully employed for functions that must be submitted.

这种习惯用法还可能被用在类似于提交的功能，也会很有用。

youdao

Europe has similarly daft subsidy regimes with equally perverse consequences the German subsidy for solar energy, for instance, which has diverted the world's solar-cell production to sun-free Germany, thus raising the price in sunny countries where it might be usefully employed.

ECONOMIST: Climate change