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Observer1 has received!怎么飞了起来？这还是武侠剧吗？————第一更到。5. The ship shall make a long sound when approaching the elbow or section of the waterway or channel where other ships may be shielded by intermediary obstacles. The sound signal shall be answered by any incoming ship that may hear it on the other side of the elbow or behind the intermediate obstacle with a long sound.多年前一段纯真的友谊，多年来尘封已久的恩怨，铺展开全新的生命版图。李心兰和李柏杉姐弟一夜之间成为孤儿，被父亲的好友——商人刘力伟收养。而刘的妻子碧芬却因为早年的纠葛，处心积虑地拆磨这两个孩子，柏杉也被迫送往国外。刘力伟的儿子刘克谦与心兰渐渐萌发了爱意，愤怒的碧芬全力拆散，二人离家出走，不料发生了意外。离开刘家的日子里，心兰咬紧牙关，自食其力。其间，遇到了青年才俊张君华，君华开朗、善良，但……黄观忙应声答应，寒暄了几句，又对黄夫人道：这是张姑娘的哥哥和表兄。这日一大早，楚怀王例行的祭拜天地祖庙，之后又在校场检阅三军，颇有点誓师大会的意思，之后便是开拔出城。The above design error stems from confusing the hierarchical structure of "role" with that of "person" and mistaking "Has-A" for "Is-A". The specific solution is to abstract a role class: