You must change nothing in your writing without absolute necessity. If it is necessary, then change with simplicity.
体现了道家阴阳平衡的思想,强调事物之间的相互制约与和谐。
Internal mental events are irrelevant to the scientific study of behavior.
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。