过去是知识的源泉,未来是希望的源泉。热爱过去意味着对未来的信心。
The most beautiful words in the English language aren't "I love you" but "it's benign."
A person must go through hard work to achieve something.
天然气的未来在于其适应能力,而不仅仅是当前的主导地位。