A thing is not necessarily either true or false; it can be both true and false.
我不知道第三次世界大战会用哪些武器,但第四次世界大战中人们肯定用的是木棍和石块。
Deep learning is a powerful tool for solving complex problems.
Energy security is a cornerstone of national strategic security, and we must firmly hold our energy饭碗 in our own hands.
生活的目的不是快乐。它是有用的,是光荣的,是富有同情心的,是让你活得有意义,活得好。