You have to spend some energy and effort to see the beauty of math.
你必须花费一些精力和努力才能看到数学的美。
森林是地球的肺，我们不要让它窒息。
The rise of China poses a significant challenge to the liberal democratic order.
The first requisite of the happiness of the people is the abolition of religion.
你的空间无法扩展是因为我。