现在已经清楚,杂种形成的种子具有两个分化性状中的一个或另一个。
我相信作为一个演员,你必须愿意冒险并突破界限。
Difficult circumstances serve as a textbook of life for people.
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.