1. 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。
2. The money could be more usefully spent on new equipment. 这笔钱用来购置新设备可能会更有价值。
3. The process can usefully be thought of in terms of the gradual emergence of two somewhat separate features: the self as a subject, and the self as an object. 这一过程会逐渐形成两种稍有不同的特征:主体自我和客体自我。
4. I resolve to index data usefully. 我决心有效地索引数据。
5. In doing so, it can usefully learn from Europe's experience. 为此美国可以借鉴欧洲有益的经验。