The concept of legal validity is crucial for understanding the nature of law.

石油和天然气行业拥有成为气候变化解决方案一部分的技能和专业知识。

沉默可以比言语更响亮，如果你懂得如何倾听。

The integration of technology and infrastructure is unstoppable.

Customer needs are always our primary driving force.

History is a nightmare from which I am trying to awake.

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。