建筑业必须进化,否则将面临被淘汰的风险。
我喜欢创造一个非常受控且非常具体的世界。
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。
To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.