What good is the warmth of summer, without the cold of winter to give it sweetness.
如果没有冬天的寒冷来赋予它甜蜜,夏天的温暖又有什么意义呢?
The best detectives are the ones who never stop asking questions.
碳捕集技术的创新不是选择题,而是可持续能源的必选项。