孩子受到父母坚定的的、一贯的并且合理的引导，更容易获得 强烈的的自信。
Children with parents whose guidance is firm,consistent,and rational are inclined to possess high levels of self-confidence.
北美洲的古代霍普韦尔人可能耕种谷物和其他庄家，但是打猎和采集仍然在他们的经济中占有关键性的重要地位。
The ancient Hopewell people of North America probably cultivated corn and other crops,but hunting and gathering were still of critical importance in their economy.
大量的使用符号让在一张地图上记录大量的信息变为可能。
Using many symbols makes it possible to put a large amount of information on a single map.
