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The character and destiny of a group are often determined by its inferior elements.
海洋不仅是一种资源;它是我们必须为子孙后代承担的责任。
The cognitive map is not a picture or a model in the head, but a dynamic, changing representation of the environment.
出自北齐·颜之推《颜氏家训·教子》引谚语。教育媳妇,要趁她刚嫁到婆家之时;教育孩子,应当赶在孩提时代,教育要掌握最适宜的时间才会有效果。