在野外,每一个决定都可能意味着生与死的区别。
A well-designed deposit insurance system can prevent bank runs without creating excessive moral hazard.
The original idea of the web was that it should be a collaborative space where you can communicate through sharing information.
儿童是一个细心的观察者,他特别容易被成人的行为所吸引,进而模仿他们。
无人机的价值在于解决行业的痛点。