"Is-A" refers to the "one" of one class and belongs to another class, while "Has-A" is different, which indicates that a certain role has a certain responsibility. A common reason for the wrong use of inheritance instead of aggregation is to mistakenly treat "Has-A" as "Is-A". For example:内战期间，国民党反动派在全国各地大规模抓壮丁以扩充兵源。在四川龙隐乡，一幕幕由抓壮丁引发的故事接连上演——“天下第一保”王保长（李保田饰）欺上瞒下，中饱私囊；管区征兵工作队卢队长横征暴敛，强占民女，无恶不作；流氓无产者潘驼背（刘亚津饰）为虎作伥；土老肥李老栓（王大安饰）被迫将三儿子送去当童子军；善良正义的三嫂子（侯继林饰）不得不对王保长笑脸相迎；等待出嫁的幺妹子（谢润饰）无奈之下推迟婚期；雇农姜国富被逼死荒野……其中一位短发高颈，身高直与杨长帆比肩，正是弗朗机商魁沙加路，混在澳门已近十年，拥有一口流利的粤语，他身后那位杨长帆虽然不认识，但从黑色的长袍和手中的小本本看来，该是传教士无疑。他在折子中叩谢天恩，言称：他自小受长辈教导，知道勤俭持家的道理，因此很小就不依赖父母祖荫、自食其力过活了。East Lake Park East Lake Park East Lake Park site is the ancient Quanzhou eight scenic "East Lake Lotus Fragrance" site. During the Tang Dynasty, the lake was more than 40 hectares, with East Lake Pavilion and Ergong Pavilion. Song YouBonn Pavilion; There are ancient pavilions in the Ming Dynasty. When lotus flowers are planted in full bloom, the fragrance of lotus flowers in Xinghu Lake wins. Tang Jiang Gongfu, Han Yu, Ouyang Zhan and others were famous for their activities. East Lake Park is characterized by Minnan architectural culture, with the central lake as the main body and cultural landscape arranged around the lake. Construction of Xinghu Lotus Fragrance, Qifeng Pavilion, Seven Stars Arch Moon, Ergong Pavilion, East Lake Pavilion, Bonn Pavilion, Rangu Pavilion and other quiet areas; Children's paradise, sunrise in Shuang Zhou and cruise ship dock are the moving areas. More than 20 plant rock landscapes, such as Erythrina Ruilin, etc., have been built in detail. Stone carvings and carvings highlight the stone culture in southern Fujian. It has both Quanzhou's historical and cultural connotation and the trendy flavor of the times, with unique style. He has won the provincial "Beautiful Environment Award" three times, and has also been named "Top Ten Buildings Loved by Citizens" and "Top Ten Night Scenes in Quanzhou". In 1998, it was selected into 100 famous Chinese gardens for its elegant, beautiful and exquisite garden style in the south of the Yangtze River.Let's put it this way, In the next attack, For the first time, the Vietnamese army and this kind of thing mixed up to fight, This also confirms our previous guess: This is not a native animal, But some kind of "weapon" domesticated by the enemy, As for the course of the battle, Just the same as before, It's just that we have the upper hand, Because the support of the artillery group is coming, More than ten kilometers away, 152, 130 artillery shells into the base into the base to "throw" this way, In front of the position, the floating soil lifted by the shell explosion can reach less than half an arm when it is thickest. Therefore, although the number of Vietnamese troops who failed to sneak attack and changed to storm attack was much larger than ours, There is that kind of thing "help", but in the face of strong firepower, it is still difficult to move. Apart from the upset of the bombed people, there is basically no other end. Anyway, we are especially relieved. I also say that this is revenge for all the dead comrades and Zhou Xiaolin, whose leg has been abandoned. "
