The beauty of computational complexity lies in its ability to classify problems based on their inherent difficulty.
我从不后悔选择音乐这条路,即使再给我一次机会,我依然会这样选择。
儿童的一切教育都必须遵循一个原则,即帮助孩子身心自然的发展。
When you arrive at your room in a hotel, locate the emergency exits. It only takes a minute.