我不是为死去的总统说唱，我宁愿看到总统死去。
The future of drones lies in deep cultivation in vertical fields.
在观察的领域里，机遇只青睐有准备的头脑。
Lock up your libraries if you like; but there is no gate, no lock, no bolt that you can set upon the freedom of my mind.
Hard work, under the old system, meant long hours, little rest, and poor pay. Under the new system, it means a fair day's work for a fair day's pay.