As we all know, the period of children's development is the most important period in life. Moral malnutrition and mental poisoning are just as harmful to human mind as physical malnutrition is to human health. Therefore, children's education is an important issue of human exhibition.
我们都知道，儿童发展的时期是一生最重要的时期。道德的营养不良和精神的中毒对人的心灵的危害正如身体的营养不良对于身体健康的危害一样。所以，儿童教育是人类展重要的一个问题。
恐惧是想象的影子。
晶体管不是单一的发明，而是一系列相互建立的发现。
宇宙是一个巨大的地方，也许是最大的。
水产养殖技术的创新将是满足世界对海鲜日益增长需求的关键。
The key to solving complex problems is to ask the right causal questions.