The essence of a free government consists in an effectual control of rivalries.
可持续发展不是一种选择,而是我们对后代的责任。
Models are not crystal balls, but they are the best tools we have to understand the future.
小说是一种永远处于危机中、濒临消失边缘的艺术形式,而这正是它保持生命力的原因。
Quality is not a slogan; it is a commitment.
我们必须平衡能源供应与环境保护。