刽开顽石方知玉，淘尽泥沙始见金。
释义：只有经过艰苦的努力和考验，才能发现或创造出价值重大的事物。
Energy security is a crucial guarantee for national development. We must intensify technological innovation to enhance the efficiency of oil and gas exploration and production.
La pasión es lo que hace que la música cobre vida.