人工智能的关键一直是表示法。

农业创新必须同时解决数量和质量问题。

The power elite is composed of men whose positions enable them to transcend the ordinary environments of ordinary men and women; they are in positions to make decisions having major consequences.

Empirical evidence should drive economic policy, not just ideology.

编辑是一项改写活动。

短期收益不应损害长期可持续性。