现代世界让我们自由，但也让我们痛苦。
The modern world has made us free, but it has also made us miserable.
The energy industry is not just about oil and gas; it's about powering human progress.
The ultimate goal of machine learning is to make computers learn from experience and improve their performance on tasks over time.
了解这个世界就是爱它，而爱它就是为它哀伤。
社会主义的目标是共产主义。